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Sailing Terms Everyone Should Know

By: American Sailing Sailboats

Knowing the right sailing terms to use on board a boat is not JUST a way of sounding super cool and impressing your friends. (Though it works for that, too.) It’s actually very useful, and sometimes crucial in communicating while you’re sailing. Some of the vocabulary used on board boats can sound arcane, which it is! That’s part of what’s fun about it; we’re still using terms that have been used by sailors for hundreds of years. So when you know your terminology, you’re participating in the grand sailing tradition, and you don’t have to say, “Can you hand me that…thing?”

photo by b. cohen

Here are the key sailing terms you’ll want to know as you begin learning to sail !

• Port: Facing forward, this is anything to the left of the boat. When you’re onboard, you can use this term pretty much any time you would normally say “left.” Starboard: Facing forward, this is anything to the right of the boat. Same deal as “port”–only the opposite.
• Bow/Stern: The bow is the front of the boat, the stern is the back. Anything near the front of the boat is referred to as being “forward,” and anything toward the back is “aft” or “astern.”
• Point of Sail: The boat’s direction relative to the wind. For example, if you’re going straight into the wind, your point of sail is called “in irons.” (Note: This isn’t a good place to be!) If the wind is blowing straight over the side of the boat, that’s called a “beam reach.” There are 8 commonly used points of sail, and it’s a good idea to familiarize yourself with them before going out.
• Helm: Where you steer the boat. Usually this is a big wheel, but on smaller boats it can be a tiller, which is basically a long wooden stick. Either of these can be used to control the boat’s rudder.
• Keel: The keel is a long, heavy fin on the bottom of the boat that sticks down into the water. It provides stability and is the reason why modern sailboats are nearly impossible to capsize.
• Heeling: This is the term for when a sailboat leans over in the water, pushed by the wind. There’s nothing else like the thrill of heeling over as your sails fill and your speed picks up!
• Tack: This term has two distinct meanings, both of them very important. As a verb, to tack is to change direction by turning the bow of the boat through the wind. As a noun, your tack is the course you are on relative to the wind. For example, if the wind is blowing over the port side, you are on a port tack. If it’s blowing over the starboard side, you’re on a…you guessed it…starboard tack.
• Jibe: A jibe is another way of changing direction, in which you bring the stern of the boat through the wind. Whether you choose to tack or jibe entirely depends on the situation–what’s around you, and the direction of the wind.
• Windward: The side of the boat closest to the wind. When heeling over, this will always be the high side.
• Leeward: The side of the boat furthest from the wind. When heeling over, this will always be the low side.
• Lines: On board a boat, this is what you say instead of “ropes.”
• Mainsail: The big triangular sail just aft of the sailboat’s mast. As the name suggests, this is the boat’s largest and most important sail. Running along its bottom edge, the mainsail has a thick pole called the boom.
• Jib: The next most common sail on any boat. The jib can always be found forward of the mast, and unlike the mainsail, does not have a boom.

  Getting familiar with these sailing terms is an important step. Not only will you sound like you know what you’re doing, you’ll quickly begin to realize that with the right practice and training, you really DO know what you’re doing!

Try our online sailing term quizzes: Sailing Terms 1 | Sailing Terms 2 | Sailing Terms 3 | Sailing Terms 4

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Sailing Terms: A Complete Guide

Last Updated by

June 15, 2022

Learning sailing terms when you first get into boating can be a daunting task.

Some sailing terms are logical, like 'fore' means forward or front of the boat, while others might as well be in a different language. Athwartship, for example. Nothing in our daily lexicon gives any clues as to what that might mean. Like it or not, it's time to dust off the old noodle and get to memorizing some new vocab words!

Knowing the difference between a clew and a tack, a luff and a leech, will help you communicate with your sail maker regarding which part of your sail needs resewn. If you need to have your rigging adjusted, you must know the difference between your shrouds and your stays, your standing rigging vs. your running rigging.

By educating yourself in the correct names of all parts of your sailboat, you can avoid situations in which you may need to use terms such as ‘thingy’ or ‘that round part at the end of that thing’. While even the most seasoned sailor occasionally troops over the vernacular, it is always beneficial to have as wide a nautical vocabulary as possible. Many in the sailing community get by without knowing the entire sailing dictionary, but if you’re interested in avoiding vocabulary embarrassment, check out the list I’ve compiled of sailing terms that every sailor ought to know.

I’ve been sailing on and off throughout my life and I know from experience that it is incredibly helpful to know the correct terms for each part of your sails, rigging, and boat.

Sailors are among the kindest, most helpful people you’ll ever meet. But, if you’re looking for help on why you’re not getting the most speed out of your mainsail and you know don’t know the correct terms for each part of the sail, it may be hard to get advice from you fellow sailor on why ‘the back of the mainsail is flappy’. They would be more likely to give useful advice if you’re able to tell them that you’re struggling to keep wind in the roach of your mainsail. Check out my list of sailing terms and see if a few don’t stick. I’ve done my best to include pictures when possible.

Table of contents

Sailing Terms

Abeam : When an object, craft or island is abeam your vessel, that means that it is off the side of your boat. It is 90 degrees from the centerline of your boat.

Abaft : Toward the stern. “Honey, have you seen my boat shoes?” “They’re abaft the navigation table!” This is the opposite of forward.

Aft : In the stern of the boat. For example, the back cabin is referred to as the aft cabin.

Apparent wind : The wind direction and speed which the crew observes to be blowing in combination with the true wind. This is often different from the true wind direction and speed due to the boat's motion.

Astern : The area behind the boat. If you go astern, you are going in reverse.

Athwartship : Directionally perpendicular to the centerline of the boat.

Backing (a sail) : Forcing the sail to take wind into its opposite side by pulling the sail to the opposite side of the boat.

Backstay : The wire that runs from the back of the boat to the mast head. This prevents the mast from falling forward.

Bailer : Any scoop-like container that is used to remove water from within a vessel’s hull.

Ballast : Weight which adds stability to the vessel. The weight usually is composed of lead or iron and placed low in the boat's hull, such as within the keel.

Batten : a thin, flexible strip (often fiberglass) that is inserted into the main sail to help it stay open to the wind. The batten runs from the back edge of the sail (leech) toward the front edge (luff).

Beam : The width of the vessel at its widest point.

Beam reach : Sailing with the wind blowing perpendicular to the direction the boat is traveling.

Bearing off or Bearing away : Steering the boat away from the direction in which the wind is blowing.

Bend : a knot which connects two ropes.

Berth : A slip, a mooring, or a bed within the boat.

Bight : A bend or loop in a rope. When a rope forms a bight, it has changed direction 180 degrees.

Bilge : The lowest area within a boats hull. This area collects water which is then pumped overboard by a bilge pump.

Bimini : The covering over the cockpit. Usually constructed from a stainless steel frame covered with canvas or fiberglass. It provides protection from sun and rain, but not wind.

Binnacle : The pedestal centrally located in the cockpit that generally holds the steering wheel and navigational instruments.

Block : A pulley.

Boom : This pole runs perpendicular to the mast and holds the bottom of the mainsail in place. Its position is adjustable side to side as needed for the wind direction.

Boom vang : A tackle which ensures that the boom does not lift upward from wind pressure in the mainsail.

Boot Top or Boot Stripe : The stripe of tape or paint between the boat's underwater (bottom) paint and it’s above water (topside) paint.

Bow : Front end of the boat

Bowsprit : The forward most protruding pole or platform which some boats possess. This spar allows for the sails and rigging to be attached further forward.

Broach : When a boat sailing downwind accidentally ends up sideways to the waves and heels over dangerously. This can be caused by large seas or poor steering.

Broad reach : Sailing with the wind coming off your stern quarter. If you’re standing at the helm facing the bow, the wind is blowing halfway between the side and the back of the boat.

Bulkhead : The walls in a boat which run athwartship, or perpendicular to the centerline of the vessel.

Capsize : When a vessel tips over past 90 degrees.

Catamaran : A vessel with two hulls.

Centerboard : A retractable keel which helps the sailboat maintain course and stability underway. When raised, the vessel is able to enter shallow waters.

Centerline : An imaginary line that runs from the center of the bow to the center of the stern.

Chainplate : A metal plate that is secured to the boat's hull to which wires supporting the mast are attached. The chainplates may be exterior or interior, visible or hidden.

Chandlery : A store that sells boat supplies and parts.

Cleats : The wooden or metal piece to which ropes are secured.

Chock : A fitting that a line passes through to change direction without chafing.

Clew : The lower back corner of a sail. This is where the foot and leech of the sail meet.

Close-hauled : Sailing as close to the direction the wind is coming from as possible with the sails pulled in tight. (See Points of Sail for infographic.)

Close Reach : Sailing between close hauled and beam reach. (See Points of Sail for infographic.)

Coamings : The lip around a hatch or window which stops water from entering. Also the raised area around the cockpit to keep out water.

Cockpit : The area from which steering occurs. This can be in the center of the boat or in the back of the boat.

Companionway : The doorway into the cabin.

Cotter pin : a bendable metal pin which is inserted into a metal rod then bent to lock it in place.

Daybeacons : Markers for navigation which are on posts. These are red or green.

Dead run : Sailing with the wind coming from directly behind the boat. Sails are fully out to catch the wind.

Dead reckoning : Determining a vessel's position by knowing the direction and speed traveled.

Dinghy : A small boat which is used to travel to shore from the main vessel. This can be propelled oars or a motor.

Dodger : The structure at the front of the cockpit which protects the cockpit and companionway from wind and spray. This is generally made of stainless steel frame covered with canvas and plastic windows. It can also be a solid structure with solid windows.

Dismasting : When the mast breaks off the boat. This can occur due to rigging failure or structural failure of the mast.

Displacement : The weight of the water that would otherwise be in the place of the boats hull.

Drogue : A sea anchor which is deployed to help control the drift of a vessel. It can be constructed like a parachute, bucket, or even a rope dragging behind the boat.

Ebb tide : After high tide when the water is receding towards low tide.

EPIRB : Stands for Emergency Position Indicating Radio Beacon. This device transmits a distress signal to emergency services and notifies them of a vessel's location.

Fairlead: A fitting which encloses a line within a smooth ring and helps guide its direction.

Fathom : A measurement of water depth equal to 6 feet.

Fid : A pointed tool used when splicing a line.

Fiddle : The raised edge around a table which prevents objects from falling off as the boat rocks or heels.

Fix : Determining a vessel's location by using the compass bearing of two or more fixed points of reference such as landmarks or buoys.

Fin keel : A fixed, ballasted keel which is centrally located beneath the hull. It does not run the full length of the hull.

Flogging : When a sail flaps noisily because it is not being filled by the wind.

Flood tide : Time period between low tide and high tide when the water is rising.

Foot : The bottom edge of a sail.

Fore : At or near the bow of a vessel.

Forestay : The wire which leads from the bow to the top of the mast. The forward most sail attaches to the forestay either directly or by use of a roller furling system.

Full keel : A fixed, ballasted keel which runs the full length of the hull.

Furling system : A system around which the sail wraps when not in use and is unwrapped for sailing. This may be around the forestay or within the mast.

Freeboard : The distance on a vessel from the waterline to the deck.

Galley : The kitchen on a boat.

Gelcoat : A colored resin which is painted onto the outside surface of a boat and forms a protective glossy layer.

Genoa : A large forward sail which, when fully extended, comes back past the mast. Larger than a jib sail.

Gimbals : Often attached to a boat's stove, it is the fitting which allows an object to maintain an upright position when a vessel heels.

Gooseneck : The point at which the boom attaches to the mast. It allows the boom to move in all directions.

Ground tackle : The anchor, chain, and line used to fix a boat to the bottom when anchoring.

Gunwale : Pronounced “gunnel”. This is the top edge of a boat's hull.

Halyard : The line which attaches to a sail to raise it.

Hanks : The clips that attach the front edge (luff) of a sail to the forestay.

Hatch : An opening window in the cabin roof much like a skylight.

Head : Bathroom on a boat. Also, the uppermost corner on a sail.

Headway : The forward motion of a vessel through the water.

Heave to : A method of controlling a boat’s position to the waves and limiting headway by backwinding the forward sail and keeping the rudder hard over into the wind.

Heel : The tilt that occurs to a boat's hull when the sails are filled with wind.

In-Irons : When a sailboat is bow into the wind with sails flapping. No steerage is possible as the vessel has no forward motion. (See Points of Sail for infographic.)

Jackline or Jackstay : Lines that are run from the bow to the stern. To these safety lines, sailors attach a lanyard connected to their harness so that they may work on deck without fear of being swept overboard in rough seas.

Jib : A triangular forward sail.

Jib sheets : Lines used to control the jib.

Jibing : Pronounced with a long i sound. Steering the boat from one downwind direction to another downwind direction by turning the stern of the boat through the wind. This will cause the sails to move across the boat to the other side, i.e. from port to starboard.

Kedge anchor : A small, lighter second anchor.

Keel : The bottom most part of a boat's structure. This part provides ballast and stability.

Ketch : A sailboat with two masts. The forward mast is the taller mast.

Knot : Regarding speed, one knot is equal to one nautical mile per hour.

Lazyjacks : Light lines that run from the boom to the mast and help contain the mainsail while it’s being lowered to the boom.

Leech : The back edge of a sail. If the sail is square, then this term refers to the outside edges of the sail.

Lee shore : The shore onto which the wind is blowing. On an island, the side of the island facing into the wind is the lee shore.

Leeward : The direction to which the wind is blowing. If the wind is coming from the north, then south is leeward.

Luff : The forward edge of the sail.

Lying a-hull : When a vessel is drifting with all of it’s sails down.

Mainsail : Pronounce main’sil. The primary sail of a boat that is hoisted up or unfurled from the mast.

Mayday : An emergency call put out over a marine radio when there is clear and present danger to the crew of the vessel.

Mizzen : The shorter mast behind the main mast on a ketch.

Monohull : A vessel with a single hull.

Mooring field : An anchorage in which permanently anchored buoys are present to which vessels may be secured.

Multihull : A vessel with more than one hull such as a catamaran or trimaran.

No-sail zone : This is an area 45 degrees to either side of directly into the wind. It is not possible for a boat to sail in this zone as the sails cannot fill with wind. Tacking is necessary. (See Points of Sail for infographic.)

On the hard : When a vessel is out of the water and being stored on land.

Painter : The line which secures the bow of a dinghy to the main boat.

Pan Pan : Pronounced pon-pon. This is an urgent distress radio call which is used when a vessel needs assistance. It is one step below Mayday.

Points of sail : The vessels course in relation to the direction of the wind.

Port : The left side of the boat when facing forward.

Port tack : Sailing with the wind hitting the port side of the vessel and the sails are out on the starboard side.

Pulpit : The metal rails at the bow of the boat which protect the crew from going overboard.

Pushpit : The metal rails at the back of the boat to protect the crew from going overboard.

Quarter : The back corner area of the boat. This area is 45 degrees behind, or abaft, the beam of the vessel.

Reef : reducing the size of the sail in high winds for the safety of the crew and equipment. This is done by either tying or rolling the sail to the boom or forestay.

Rigging : All the wires and ropes used to hold the mast in place and adjust the sails.

Roach : The outer back edge area of the mainsail. If you were to draw a diagonal line from the head of the sail to the clew (back corner), the roach would be outside this diagonal line.

Roller furling : A system which rolls the sail up when not in use. The sail is stored on the roller either at the mast or boom for the mainsail, and at the forestay for the jib or genoa.

Rudder : Steering fin at the back of the boat. Controlled by a steering wheel or tiller from the cockpit.

Running : Sailing in a downwind direction.

Running rigging : The lines, such as sheets and halyards, which control the sails.

Schooner : A sailing vessel with two or more masts. The mainmast is at the back.

Seacock : a valve which can be open or closed to allow water to flow in or out of a through hull fitting.

Scope : The length of chain and line that is between the anchor and the boat.

Scuppers : Deck drains which allow water to flow overboard.

Securite : Pronounced securi-tay. This is a radio call to provide mariners with local marine safety information.

Shackle : A metal U or D shaped link which has a removable pin through the ends.

Sheet : A line or rope which connects to the clew (back corner) of a sail. It is used to control or trim the sail.

Shrouds : Wires or ropes which run from the deck chainplates to the mast. The shrouds prevent the mast from moving side to side.

Skeg : A section of the hull from which the rudder hangs. It provides a variable amount of protection to the rudder depending on its size.

Sloop : A single masted sailboat with a mainsail and a foresail.

Slugs : Fittings on the front edge (luff) of the mainsail that slide into the mast track for hoisting the sail.

Spinnaker : A large, light, often colorful sail that is used off the bow of the boat for sailing downwind (running).

Splice : Connecting two lines together by weaving their strands together.

Spreaders : The horizontal arms extending out from the sides of the mast.

Spring line : Dock lines positioned from the bow to a midship point on the dock or from the stern to a midship point on the dock. This line configuration helps decrease forward and backward motion of the boat while docked.

Stanchions : The metal posts along the outside edge of the deck through which the lifelines run.

Standing rigging : The wires and ropes, such as the shrouds and stays, that are permanently in place and hold up the mast.

Starboard : The right side of the boat when facing forward.

Starboard tack : Sailing with the wind hitting the starboard side of the boat and the sails out on the port side.

Stays : The wires or ropes which run from the bow and stern to the mast top to keep the mast from moving forward or backward.

Steerage way : When a vessel is moving through the water with enough speed to allow the rudder to steer the boat.

Stern : The back end of a boat.

Storm jib : A small, strong forward sail used in heavy winds.

Swing : The circular motion of an anchored boat around it’s anchor due to wind and water movement.

Tack : The forward lower corner of a sail.

Tacking : Turning the boat across the direction the wind is coming from to change course direction. This causes the sails to travel to the other side of the boat.

Tender : Small boat used to transport from shore to the main boat.

Tiller : A bar which controls the rudder and is used to steer the boat from the cockpit. It is used in place of a steering wheel.

Toe rail : The raised lip around the edge of the deck. This can be constructed of wood, fiberglass, or aluminum. It helps prevent items from rolling overboard.

Topping lift : A wire or rope which runs from the back end of the boom to the mast top. This line controls the height of the boom.

Trysail : A small, strong storm sail that is used in place of the mainsail in high winds.

Trim : To adjust the sails.

Winch : A round, drum-like mechanical device used to pull on a line to raise or adjust sails.

Windlass : A winch used to raise and lower the anchor.

Windward : The direction from which the wind is blowing.

Wing on wing : Sailing downwind with the mainsail out on one side and the foresail on the opposite side.

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Beth lives on board her 1983 30ft S2 sailboat with her husband, 6 year-old son, and her two fur babies. She has been sailing and boating for most of her life. Beth has been blessed to experience cruising in the Great Lakes, the Bahamas, and in Alaska. She loves to travel and adores living on her tiny boat with her family.

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100 Basic Yachting & Sailing Terms You Need To Know

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Yachting is an increasingly popular activity that involves exploring and enjoying bodies of water aboard sailboats or motorboats. It doesn’t matter if you’re a seasoned sailor or brand-new to the sport; knowing the language used in yachting is crucial for efficient communication and secure navigation. We’ll look at some of the most often used terminology and expressions in the world of yachting in this list of 100 fundamental yachting terms, from boat parts to navigation and safety gear, and more. This list is an excellent place to start whether you’re seeking to brush up on your yachting terminology or are just beginning into the sport.

Aft – Toward the back of the boat

Anchor – A heavy object used to keep a boat in place

Ballast – Weight added to the bottom of a boat to improve stability

Beam – The width of a boat at its widest point

Bilge – The lowest point inside the boat where water collects

Bimini – A type of sunshade or canopy used on boats

Bow – The front of a boat

Buoy – A floating marker used to mark channels, hazards or anchorages

Cabin – An enclosed space on a boat used for sleeping and living quarters

Capsize – To tip over or turn upside down

Cleat – A metal or plastic fitting used to secure ropes or lines to the boat

Cockpit – The open area in the back of the boat where the steering and controls are located

Compass – A navigational tool used to determine the direction

Crew – The people who work on a boat, assisting with sailing or other duties

Deck – The top surface of a boat where people can stand or walk

Dock – A platform or structure where boats can be tied up or moored

Draft – The depth of a boat below the waterline

Fender – A cushion or bumper used to protect the boat from damage when docking

Flag – A piece of fabric used to signal or communicate on a boat

Galley – The kitchen area on a boat

Genoa – A type of sail that is used for cruising and racing

GPS – Global Positioning System, a navigational system that uses satellites to determine the location

Halyard – A rope or line used to hoist or lower a sail

Hatch – An opening in the deck or cabin of a boat

Head – The bathroom on a boat

Hull – The main body of the boat, typically made of fiberglass or wood

Jib – A small triangular sail located forward of the mast

Keel – A fin-shaped object located under the boat that provides stability and helps prevent drifting

Knot – A measure of speed equal to one nautical mile per hour

Lanyard – A short cord or rope used to secure equipment or gear on a boat

Latitude – A measure of distance north or south of the equator

Leeward – The side of the boat sheltered from the wind

Lifeline – A line or rope used to provide safety and support on the deck of a boat

Log – A device used to measure speed and distance traveled

Mast – A vertical pole or spar that supports the sails

Mooring – The process of securing a boat to a dock or anchor

Nautical – Relating to or involving ships, sailors, or navigation on water

Navigation – The process of planning and controlling the course of a boat

Oar – A long pole with a flat blade used for rowing a boat

Outboard – A motor located on the outside of the boat

Port – The left side of a boat when facing forward

Propeller – A device that uses rotating blades to provide forward motion to a boat

Pulpit – A railing or fence located on the bow of the boat

Rudder – A flat object located at the back of the boat used to steer

Sail – A piece of fabric used to catch the wind and propel the boat

Sailing is the practice of using the wind to power a vessel through the water

Sheet – A line or rope used to control the angle of the sails

Skipper – The person in charge of operating a boat

Stern – The back of the boat

Tack – The direction of a boat when it is sailing upwind

Throttle – The control used to increase or decrease engine speed

Tiller – A handle or lever used to steer a boat

Transom – The flat, vertical surface at the back of the boat where the outboard motor is mounted

Trim – The adjustment of the sails and other equipment to optimize performance

Wake – The waves created by a boat as it moves through the water

Windward – The side of the boat facing into the wind

Winch – A device used to pull or hoist heavy objects on a boat

Yacht – A larger, more luxurious type of boat typically used for pleasure cruising

Bilge pump – A device used to pump water out of the bilge

Boom – The horizontal pole or spar that extends from the mast to support the bottom of the sail

Bowline – A knot used to secure a line to a fixed object

Cam cleat – A device used to secure a line under tension

Catamaran – A type of boat with two parallel hulls

Centerboard – A movable fin located underneath the boat that helps improve stability and maneuverability

Chafe – The wearing away or damage to a rope or line caused by friction against another surface

Clew – The lower corner of a sail

Current – The flow of water in a particular direction

Dinghy – A small boat used to transport people or supplies to and from shore

Fairlead – A device used to guide a line or rope in a particular direction

Flotation device – A piece of equipment used to keep a person afloat in the water

Forestay – The wire or rope that supports the mast at the front of the boat

Gaff – A spar used to support the upper edge of a sail

Headway – The forward motion of a boat

Inboard – A motor located inside the boat

Jibsheet – The line or rope used to control the jib sail

Keelboat – A type of sailboat with a fixed keel for stability and maneuverability

Luff – The forward edge of a sail

Masthead – The top of the mast where the highest sails are attached

Navigation lights – Lights used to signal other boats of the position and direction of a boat at night

Outhaul – The line or rope used to control the tension of the bottom of the sail

Planing – The state of a boat when it is moving quickly across the water and partially out of the water

Powerboat – A type of boat that is powered by an engine rather than sails

Ratchet block – A device used to reduce the effort required to pull a line under tension

Reefing – The process of reducing the size of the sails in high wind conditions

Rigging – The system of ropes and wires used to support and control the sails and mast

Rudderpost – The vertical post or shaft that the rudder is attached to

Scow – A type of sailboat with a flat bottom and squared-off ends

Shackle – A metal fitting used to connect two pieces of rope or chain

Spinnaker – A large, lightweight sail used to catch the wind when sailing down

wind 90. Spreaders – The horizontal struts on a mast that help to support and spread the shrouds

Standing rigging – The fixed parts of a boat’s rigging system, such as the mast and shrouds

Stern light – A white light on the back of a boat used to signal other boats at night

Stowaway – A person who hides on a boat in order to travel without permission

Tiller extension – A device used to extend the length of the tiller to make steering easier

Topside – The upper part of a boat, above the waterline

Transom door – A door in the back of a boat that provides access to the water

Traveler – A device used to move the mainsail along the boom

Waterline – The level at which a boat floats in the water

Winch handle – A handle used to turn winches to control the sails and lines

Yawl – A type of sailboat with two masts, the smaller of which is located aft of the rudder post.

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Aft : The rear of a boat, close to the stern Backstay : A mast support that runs from the top of the mast to the stern of the boat. It may be adjustable in order to bend the mast backward or to increase tension on the forestay tool Ballast : Weight in the keel of a boat that adds stability Beam : A boat's greatest width Beating : Sailing (or pointing) at an angle into the wind or upwind. Since sailboats cannot sail directly into the wind, "beating" is the closest course to the wind they can sail. Bilge : The lowest part of a boat's hull

Blanketing : A tactical maneuver in which one boat slows a competitor by positioning itself to obstruct the competitor's wind Block : An assemblage of one or more sheaves (pulleys) housed in a plastic or metal case that changes the direction of travel of a line (rope) and may be attached to a boat's deck, spar or other stationary object Boom : Spar to which a sail's lower edge or foot is attached. The boom is attached to the mast at the gooseneck. Boom vang : Lines that control the boom. These lines run from the boom to the base of the mast and are used when reaching and running. Bow : The front of the boat Broach : When in a downwind situation, the boat turns uncontrollably and is pushed by the wind onto its side, lying with the mast parallel to the water. As a rule, the boat will right itself. Buoy : A floating marker Cam cleat : A mechanical cleat used to hold a line automatically. It uses two spring-loaded cams that come together to clamp their teeth on the line, which is placed between them. Also known as jam cleat . Centerboard : Like a keel, it is a weighted appendage projecting below the boat that keeps it from capsizing and also supplies the hydrodynamic lateral force that enables the boat to sail upwind. Unlike a keel, it is retractable. Cleat : A fitting, typically with projecting ends, that holds a line against the tension from the sails, rigging or mooring Clew : The lower corner of a mainsail or jib and either lower corner of a spinnaker Coming about : Turning the boat so the bow crosses through the eye of the wind, thereby changing the side of the yacht on which the sails are carried. Also known as tacking. Covering : A tactical maneuver in which a boat stays between a competitor and the wind or the next mark Daggerboard : An adjustable fin primarily used to stop the boat moving sideways through the water. Also known as centerboard. Dinghy : The Laser, Laser Radial, 470, and Finn are all dinghies that have been used in Olympic sailing - they all have one hull and a centreboard or daggerboard Downwind : The point of sail when the wind blows from aft of the boat's beam Drag : The negative or retarding force acting on a body, such as a boat moving through a fluid parallel and opposite to the direction of motion Fall off : A maneuver in which a boat turns away from the wind Fleet racing:  Competition format were entries race against each other around a course Foot : The bottom edge of a sail Genoa/Headsail/Jib : The smaller sail set in front of the mast Gooseneck : A fitting that attaches the boom to the mast Gybe : Turning the boat so the stern crosses through the eye of the wind, (thereby changing the side of the boat on which the sails are carried (opposite of tacking). Also spelled jibe. Halyard : A line used to hoist and hold up a sail Header : Wind shift that causes the boat to head away from the mark Helmsman : The crew member who steers the boat; also the skipper, or the "driver" Hiking out : Leaning out of the craft in order to change the center of gravity in the boat and go faster Hiking straps : Straps attached to the feet that help a sailor hike out more, minimizing the chance of falling out of the boat Hull:  The main body or shell of a ship or other vessel, including the bottom, sides, and deck ISAF : International Sailing Federation, the world governing body of sailboat racing Jam cleat : A device used to grip a line (rope). It has two rows of V-shaped molded teeth that grip the line when it is jammed in the groove. Also known as cam cleat. Jib : A foresail that overlaps the shroud base and is used for sailing upwind Jibe : Same as the gybe -- turning the boat so the stern crosses through the eye of the wind, thereby changing the side of the yacht on which the sails are carried (opposite of tacking) Kee l: A weighted, non-moveable appendage projecting below the boat that keeps it from capsizing and also supplies the hydrodynamic lateral force that enables the boat to sail upwind Kite : Large, light ballooning sails that are only attached to the mast at the corners. They are used when sailing downwind. Also known as spinnaker . Knot : One nautical mile per hour Lay : To sail a course that clears an object or racecourse marker buoy such as the windward and leeward marks. When a boat is doing so, it is said to be "laying the mark." Layline : An imaginary line projecting at an angle and corresponding to the wind direction from either side of a racecourse marker buoy that defines the optimum sailing angle for a boat to fetch the mark or the finish line. When a boat reaches this point, it is said to be "on the layline." Going beyond the layline means the boat is sailing a greater distance to reach the mark or finish line. Leech : The trailing edge of a sail or the curve of a sail Leeward : The side furthest away from the wind Lines : A nautical term for ropes Luff, to : Bubbling or flapping of a sail when it is not trimmed enough or is being back winded by another sailor when the course sailed is too close to the wind Mainsail : The sail behind the mast Mark : A buoy used in a racecourse Mast : The vertical spar that holds up the sails Match racing : A racing format in which only two boats compete at a time, as opposed to fleet racing, wherein three or more boats sail at once Medal race : The final race in the series. Only the top-10 boats after the opening series compete and scores are doubled. Multihull : Nacra 17 (boat used in its inaugural event at the 2016 Rio Olympic Games) - A boat with more than one hull. A boat with two hulls is also known as a catamaran and a boat with three hulls is knows as a trimaran. Nautical mile : The unit of geographical distance used on saltwater charts; one nautical mile equals 6,076 feet or 1.15 statute miles. Therefore, one statute mile equals 0.87 of a nautical mile. Off the wind : Sailing away from the wind; also downwind, reaching or running Plane : A boat planes when it sails over her own bow wave so only a small section of the hull is in the water. This allows the boat to go faster than the theoretical maximum hull speed. Pointing : Sailing at an angle into the wind or upwind. Depending on a boat's design, some will "point higher" or sail more directly into the wind and thus sail a shorter course to a given mark on the racecourse. Port : Nautical term for the left side of a boat when facing forward Port tack : Sailing with the wind blowing onto the port side and the mainsail on the starboard side Race officials : The officials responsible for running the race and enforcing the rules. This group includes the measurers who ensure that each sailor's equipment is equal and within the rules, the race officers who run the races and the judges and umpires who are rules experts and make decisions about whether rules have been broken. Reef : To decrease a sail's size Rigging : The wires, lines, halyards and other items used to attach the sails and the spars to the boat. The lines that do not have to be adjusted often are known as standing rigging. The lines that are adjusted to raise, lower and trim the sails are known as running rigging. Rudder : A moveable fin located underneath the back of the boat that steers the craft Running rigging : All moving rods and lines that support and control the mast and sails Shackle : A metal connector that attaches to other fittings with the use of a pin that is inserted through the arms of a U Sheet : A line that controls sails Skiff : 49er - A light open dinghy with a self-draining hull Slalom finish : A technical section of the windsurfing (RS:X) course involving multiple changes of direction in quick succession Spar : A basic term for a mast, boom or yard Spinnaker : Large, light ballooning sails that are only attached to the spars at the corners. They are used when running or reaching, sailing downwind. Starboard : Nautical term for the right half of the boat when facing forward Starboard tack : Sailing with the wind blowing onto the starboard side and the mainsail on the port side Stern : The rear of the boat Tacking : Turning the boat so the bow crosses through the eye of the wind, thereby changing the side of the boat on which the sails are carried (opposite of gybing) Tiller : A lever used to turn the rudder of a boat from side to side Trapeze : To stand on the side of the boat to maximize the effect of the body weight Trim : To adjust the sail to the right shape and angle to the wind. The process of "hiking out," or changing the center of gravity of the boat in order to go faster. Upwind : Toward the direction from which the wind blows; windward. Way : Forward motion of a boat. A term typically used in the context of saying that a boat is making way, is underway, or has way on. Windward : The side closest to the wind

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• Paddle Board

A to Z of Nautical Terms: A Complete Glossary of Boat Terminology

Are you a new boat owner? Whether you bought a jet ski or a 40-foot cabin cruiser, you’re going to need to understand the lingo while you’re out on the water. Here’s a glossary of basic nautical terms to have you sounding like a sailor.

Toward the stern of the vessel.

A sail position with the wind striking on its leeward side.

Around or near the stern of the vessel.

At a right-angle to the boat’s center-line.

Lashing the helm to the leeward side to ride out bad weather without the sails set.

The center of the deck of the vessel between the fore-and-aft.

Automatic Identification System.

Apparent Wind

The speed and direction of the wind combined with the boat’s movement and the true wind speed and direction.

To look behind the boat while driving in reverse.

Automatic Radar Plotting Aid.

Athwartships

At a right-angle to the aft-and-fore line of the vessel.

The act of measuring the angular distance on the horizon circle in a clockwise method, typically between a heavenly body and an observer.

When the wind starts to shift in an anti-clockwise direction.

Back a sail

Sheeting the sail to the windward direction, so the wind fills the sail on the leeward side.

The stay supports the aft from the mast, preventing its forward movement.

Baggywrinkle

The teased-out plaited rope wound around the stays or shrouds preventing chaffing.

Iron or lead weights are fixed in a low-access area of the vessel or on the keel to stabilize the boat.

A flexible and lightweight strip feeds into the sail leech’s batten pocket, supporting the roach.

Ballast Keel

A ballast bolted to the keel, increasing the vessel’s stability to prevent capsizing.

The widest point of the vessel or a traverse member supporting the deck. On the beam, objects are at a right-angle to the center-line.

Taking the action of steering the vessel away from the wind.

To tag a zig-zagging approach into the wind or close-hauling with alternate tacks.

The object’s direction from the observer measured in magnetic or true degrees.

To fasten the rope around the cleat using a figure-8 knot.

Securing the sail to the spar before hoisting it or connecting two ropes using a knot.

A sleeping quarters on a boat or a slip occupied by a vessel in a marina or harbor.

The loop or bend in a knot.

The round, lower part of the hull where the water collects.

The pulley fixed inside a plastic or wooden casing with a rope running around a sheave and changing to pulling direction.

Boot-Topping

The narrow-colored stripe is painted between the topside enamel and bottom paint.

The heeling action of the boat when it slews to the broadside while running downwind. Abroach usually occurs in heavy seas.

Broad Reach

The point of sailing the vessel between a run and the beam reach with the wind blowing over the quarter.

The partitioning wall in the vessel athwartship.

A measurement of distance equal to 0.1-sea mile, 185-meters, or 200-yards.

Center-Line

The center of the vessel along the aft-to-fore line.

Center-Board

A board lowers through a slot on the keel for reducing leeway.

The fitting slipping over the boom like a claw. It attaches to the main sheet after you finish reefing the sail.

Chart Datum

The reference level on the charts below which the low tide level. The sounding features below the chart datum. The datum level varies depending on country and area.

The metal, wooden, or plastic fitting used to secure ropes.

Close-Hauled

The skill of sailing close to the wind, also known as beating.

The lower, aft corner of the sail where the leech and foot meet.

Close Reach

The point where you’re sailing between the beam reach and the close-hauled or when the wind blows toward the forward of the beam.

The direction that you steer the vessel in degrees. Mariners can use true or magnetic readings or use a compass to plot the course.

Close-Winded

The act of sailing a boat close to the wind.

The rope loop at either end of the line reef points or an eye in a sail.

The difference between the direction indicated by the magnetic meridian and the compass needle, caused by carrying metal objects aboard the vessel.

Sailing with the wind blowing to the aft, in line with the center-line of the vessel.

Displacement

The displacement hull design displaces boat weight in the water and is only supported by its buoyancy.

The weight of the water displaced by the vessel is equal to the vessel’s weight.

The rope used to pull down the spar or sail.

To float the vessel with the wind or current. Or the distance covered by the boat while drifting in the current, measured in time.

The distance between the lowest point on the keel and the center-line of the vessel measured as a vertical distance.

The sea anchor thrown over the stern of a life raft or boat or to reduce drift.

Digital Selective Calling (a function on Marine radios ).

A retractable keel drawn into the vessel’s hull.

Emergency Position Indication Radio Beacon.

Estimated Position.

Estimated Time of Departure.

Estimated Time of Arrival.

The fitting adjusting the feeding line allows you to change the direction of the lead line.

The raised border on cabin tables, chart tables, preventing objects from falling off the surface.

Measurement of water depth and rope lengths.

• 1 Fathom = 6-feet = 1.83-meters.

The vessel positioning plotted by two or more positioning lines.

The vertical distance between the top of the deck and the waterline.

The closest stay running between the masthead and stemhead, hankering the mainsail.

A large-size headsail is available in various sizes, overlapping the mainsail before hoisting in fresh to light winds on all sailing points.

Two concentric rings pivot at right-angles to keep objects horizontal despite the swaying motion of the boat.

Global Navigation Satellite System.

Global Maritime Distress and Safety System.

To change tack by turning the boat into the eye of the wind.

Booming out the headsail in a windward position using the whisker pole to hold it on the opposite side of the mainsail.

The fitting anchoring the mast to the boom, allowing free movement in all directions.

This metal rail surrounds the boat’s edges, allowing easy gripping to prevent falling overboard.

Turning the stern through the wind to change from one tack to another.

The spinnaker guy controls the steadying rope for the spar through the aft-fore position of the spinnaker pole. The foreguy keeps the spinnaker pole in the forward position.

Global Positioning System.

The rope hoisting the lower sails.

Highest Astronomical Tide.

The fitting for attaching the sail’s luff to a stay.

The deck opening provides the crew with access to the berth or cabin interior.

The streamlined surround of a forestay featuring the groove allows for the sliding attachment of the luff sides of the headsail.

Head-to-Wind

When the bow of the vessel points into the direction of the wind.

The forward motion of the vessel through the water.

The toilet.

The action of backing the jib and lashing the tiller to the leeward side in rough weather conditions. The heave-to encourages the vessel to reduce headway and lie quietly.

When the vessel exaggeratedly leans to one side.

International Maritime Organization.

International Regulations for Preventing Collisions at Sea.

International Telecommunication Union

The lines on weather maps joining places with equal atmospheric pressure.

The temporary device for replacing damaged or lost gear.

The line running from aft-to-fore on both sides of the vessel. The jackstays allow for the clipping attachment of safety harnesses to prevent being lost at sea when falling overboard.

A secondary, smaller, lightweight anchor.

A dual-masted sailboat featuring a mizzen mast that’s slightly smaller than its mainmast, with a stepped forward position of the rudder post/stock.

The center-line of the vessel features the attachment of the ballast keel, allowing for the lowering of the center-board.

Kicking Strap

The line for pulling down the boom or keeping it in the horizontal position when on a run or reach.

A short length of line attached to an important object that you don’t want to lose, such as the jet ski key. The lanyard can connect to your wrist or lifejacket.

The aft edge of the triangular sail. Both side-edges of a square sail.

Lowest Astronomical Tide.

The shore on which the wind is blowing.

The natural tendency of vessels to bear away from the direction of the wind.

Moving in a direction away from the wind. The direction in which the wind is blowing.

The vessel’s leaning to one side due to improper distribution of weight in the boat’s hull.

The leading edge of the sail. Luffing up is turning the head of the boat into the wind.

The sideways motion off course resulting from the wind blowing on one side of the hull and sails.

The instrument for measuring the distance and speed of a boat traveling through the water. It is also the act of recording the details of a voyage in a logbook.

Marinized engine

A car engine or motorbike motor adapted for use in watercraft.

Maritime and Coastguard Agency.

The keel socket locating the base of the mast.

Measured Mile

The distance marked on charts measures one nautical mile between islands at sea or onshore ranges.

The short after-mast on the yawl or ketch.

This imaginary longitudinal line circling the earth, passing through both poles, cutting at right-angles through the equator.

Mean Low Water Neaps.

Mean High Water Neaps.

Mean High Water Springs.

Mean Low Water Springs.

Maritime Mobile Service Identity.

The rope used for pulling out the sail’s foot.

Overall Length (LOA)

The extreme length of the vessel. The measurement from the aftmost point of the stern to the foremost points of the bow. This measurement excludes the self-steering gear, bowsprit, etc.

An emergency call requesting immediate assistance.

The bowline on a tender or dinghy for towing or making fast.

To gradually let out the rope.

The left-hand side of the vessel when looking forward.

Point of Sailing

The angles of the wind allowing for the sailing of the boat. Or the boat’s course relative to its direction and the direction of the wind.

Your vessel is on its port track when the wind is striking the boat’s port side first, and the mainsail is out to the starboard side.

Line of Position/Position Line

The line on charts shows the bearing of the vessel and the position where the boat mist lie. Or two positional lines providing a location fix.

The steel guard rail fitted to the bow to provide additional safety for the crew when working around the boat’s edge.

The steel guard rail fitted around the stern of the boat to prevent the crew from falling overboard.

The section of the vessel midway between the beam and the stern.

The difference in water levels between the high and low tides is the range of tides. Or the distance at which you can see the light.

The act of reducing the sail surface area through folding or rolling additional materials onto the forestay or boom.

Reefing Pennant

The sturdy line allowing you to pull down the leech cringle or luff to the boom while reefing.

When sailing with the wind blowing onto the beam, with all sailing points between close-hauled and running.

Riding Sail

The small sail you hoist to maintain the steerage way during stormy weather.

The imaginary line cuts through all meridians at the same angle. Or the course of the vessel moving in a fixed direction.

Rigging Screw

The deck fitting allowing for tensioning of the standing rigging.

The act of sailing with the wind to the aft of the vessel and with the sails eased into the wide-out, full position.

The curve in a leech sail extending beyond the direct line formed from clew to head.

Running Rigging

All moving lines like halyards and sheets used for trimming and setting sails.

Search and Rescue.

A vessel with two or more masts and the mainmast featured in the aftermost position.

Search and Rescue Transponder.

The toe-rail holes allowing water to drain off the deck.

The room in which the vessel can maneuver clear of submerged dangers.

The shut-off valve for the underwater outlet or inlet passing through the vessel’s hull.

This is French for “radio silence.” You’ll use it when reporting a distress call or incident at sea.

The act of hoisting a sail. Or how the sails fit or the direction of a tidal stream or current.

A procedure word for identifying safety calls.

A steel link featuring a removable bolt crossing the open end. The shackle comes in various designs, from “S” to “U” shapes and more.

The cables or ropes typically fund in pairs, leading from the mast to the chainplates at the deck level. These shrouds prevent the mast from falling to the side, and it’s part of your standing rigging.

The rope attaching to the boom to the sail’s clew allows for the trimming and control over the sail.

Skin Fitting

A through-hull fitting featuring a hole in its skin allows for air and water passing. The seacock is the accessory used for sealing the cavity when not in use.

A boat with a single-masted design for one headsail and one mainsail.

The general term for any metal or wooden pole on board a boat. The pole gives shape to the sails.

Safety of Life at Sea.

Speed Over the Ground

A lightweight, large balloon-shaped sail for running or reacting.

The horizontal struts attach to the mast and extend to the shrouds to assist with supporting the mast.

The act of joining wires or ropes using a weaving process interlacing the fibers in the cable or rope.

The sail will stall if the airflow over the sail surface breaks up, causing the vessel to lose its momentum.

Standing Part

The part of the line you don’t use when making a knot. Or the part of a rope you use to tie around the knot.

The metal post bolted to the deck in an upright position to support the guard railing.

Standing Rigging

The stays and shrouds provide permanent support to the mast.

Starboard Tack

The vessel is on the starboard tack when the boom is out to post, and the wind strikes the boat’s starboard side.

The right-hand side of the vessel when looking forward.

The rope or wire supports the mast in the fore-and-aft direction. It is a part of the standing rigging for your boat.

The sternward movement of the vessel towards the backward direction.

Steerage Way

The vessel has steerage when it reaches sufficient speed, allowing for steering or answering the helm.

The loop of rope or wire attaches the spar to the block to make a sling.

The railing around the vessel’s stern prevents the crew from falling overboard. Modern yachts do not have the elegant wooden railing of older models. Instead, they feature tubular steel or aluminum railings, called Pushpits.

Telegraph Buoy

The buoy marks the position of a submerged cable.

To pull on the end of the rope or cable, wound around a winch.

The compass mounted over the captain’s berth, allowing for the easy reference to what’s going on in the vessel’s helm.

The metal fitting forming eyes at the end of cables, wires, or ropes.

A description for any small boat, usually inflatable models. These boats will take supplies and people between a larger vessel and the shore.

Thermal Wind

The wind occurring from the difference in the heating of the sea and the land by the sun. The sun heats the land faster than the sea, resulting in the onshore wind from the sea replacing the air rising over the land, causing the “sea breeze” phenomenon.

Thumb Cleat

A small cleat featuring a single horn.

The wooden pegs featuring vertical pairs in the gunwale for constraining the oars for rowing.

Topping Lift

The rope linking the mast to the boom end. It supports the boom, allowing for its lowering and raising.

The progress on the vessel’s journey over the ocean. The trajectory line of the boat.

The sides of the hull between the waterline and the deck.

The netting stretching across the hulls of a catamaran.

A watch period or watch duty at the helm of the vessel.

Traverse beams forming part of the stern and fixed to the sternpost of a wooden ship.

Tricolor Lamp

A lamp displaying red in proper port sectors, green in the starboard sectors, and white astern. Some authorities permit the tri-color light on smaller boats instead of conventional stern and bow lights.

Turk’s Head

A decorative knot featuring variable numbers of interwoven strands that form a closed loop.

The direction and velocity of wind measured by stationary observers. Apparent wind is wind experienced by moving objects.

Sturdy steel fittings used for attaching standing rigging to the spar or mast.

The low, forward corner of the sail. Or the action of turning the boat through the wind to get it to blow on the other side of the sails.

Sailing close-hauled to work windward on an alternate course. The wind is on one side then the other.

The low strip of steel, wood, or strapping running along the edge of the deck. You’ll use it in combination with the hand railing to hold your feet to the deck to prevent falling overboard.

The rise and fall of the ocean are caused by the moon’s gravitational effect on the earth and the ocean.

The line moving from the mast had to the spar or the boom used in raising it.

To adjust the sail angle using sheets to achieve optimal efficiency from the sail. Or it describes the action of adjusting the load, influencing the fore-and-aft angle at which it floats.

The course of the boat making good on its travel plan. A fitting of on the boom or mast to the slide on the sail fit. The fitting along which the traveler runs for altering the sheet tension.

The speed and direction of the wind when anchored, stationary on the water, or land.

Turn Buckle

The apparatus used for tightening the standing rigging on the vessel.

A line used in raising something like a spinnaker pole vertically.

The vessel is underway when it releases it fastening to shore when it is not aground or at anchor.

See kicking strap.

The wind will veer when shifting in a clockwise direction. Veering can also mean paying out anchor rope or cable in a controlled manner.

Velocity Made Good

Very High Frequency

The disturbed water left behind (astern) the boat as it moves forward in the water, usually caused by a motor.

Weather Helm

The tendency of the vessel to turn into the wind.

The distance between the radio waves.

Weather Side

The side of the vessel to which the wind is blowing.

World Geodetic Survey of 1984 (most common chart datum).

A mechanical device featuring a cable or line attached to a motor. The winch pulls the boat aboard the trailer and helps with the vessel’s launch from the trailer. The winch also gives more pulling power to withdrawing nets or other apparatus from the water.

Whisker Pole

A lightweight pole used for holding the clew out of the headsail when on a run.

The winch features a vertical handle and a horizontal shaft used in hauling up the anchor chain.

The parts of the vessel that increase the drag on the boat. Examples would be the spars, rigging, etc.

The direction from which the wind blows toward the wind (the opposite way to leeward).

Cross Track Error. The perpendicular distance between two waypoints off track.

A dual-masted vessel with its mizzen stepped aft of its rudder post/stock.

John is an experienced journalist and veteran boater. He heads up the content team at BoatingBeast and aims to share his many years experience of the marine world with our readers.

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What Sail Dimensions are Required to Calculate Sail Areas?

The required sail dimensions for calculating the area of any triangular sails are usually its height and the length of its foot. But that only works for mainsails and mizzens with no roach, and jibs with a 90 degree angle at the clew - and what about high-cut headsails, spinakers and cruising chutes? Read on...

Foresail and mainsail dimensions are universally referenced with the letters 'J', 'I', 'E' and 'P' approximating to the length of the foredeck, height of the mast, length of the boom and the height of the main sail - but more accurately defined further down this page.

Yacht designers need these sail dimensions to calculate thought provoking stuff such as the sail-area/displacement ratios of their creations, and sailmakers need them before they put scissors to sailcloth.

If our sailboat's sails were perfectly triangular then, as every schoolboy knows, their area would be 'half the height, times the base' - but with the possible exception of a mainsail with a straight luff, generally they're not. Here's how it works...

Main and Mizzen Sail Dimensions

These are almost right-angled triangles except for the curvature of the leach (the 'roach') which increases the sail area. 

It's usually calculated as:~

Area = (luff x foot)/1.8, or

Area = ( P x E )/1.8, where:~

• 'P' is the distance along the aft face of the mast from the top of the boom to the highest point that the mainsail can be hoisted, and
• 'E' is the distance along the boom from the aft face of the mast to the outermost point on the boom to which the main can be pulled.

For the mizzen sails on ketches and yawls , 'P' and 'E' relate to the mizzen mast and boom.

For more heavily roached sails, the increased area can be accounted for by reducing the denominator in the formula to 1.6.

Clearly calculating sail areas isn't going to be an exact science...

Jibs, Genoas and Staysail Dimensions

For a working jib that fills the fore triangle - but no more - and with a foot that's parallel to the deck, then you've got a 'proper' right-angled triangular sail, whose area is:~

Area = (luff x foot)/2, or

Area = ( I x J )/2, where:~

• 'I' is the distance down the front of mast from the genoa halyard to the level of the main deck, and
• 'J' is the distance along the deck from the headstay pin to the front of the mast.

Genoas, by definition, have a clew which extends past the mast and are described by the amount by which they do so. For instance a 135% genoa has a foot 35% longer than 'J' and a 155% genoa 55% longer. Areas are calculated as follows:~

Area (135% genoa) = (1.44 x I x J )/2, and

Area (155% genoa) = (1.65 x I x J )/2

High-cut Headsails

But these formulae don't work for a high-cut jib with a raised clew - unless you imagine the sail turned on its side such that the luff is the base and the luff perpendicular is the height.

It's still a simple calculation though, once you know the length of the luff perpendicular ( LP ), the sail area is:~

Area = (luff x luff perpendicular)/2, or

Area = ( L x LP )/2, where:~

• 'L' is the distance along the forestay from the headstay pin to the front of the mast, and
• 'LP' is the shortest distance between the clew and the luff of the genoa.

Spinnaker Sail Dimensions

Much like calculating foresail areas, but with different multipliers for conventional spinnakers and asymmetric spinnakers...

Conventional Spinnakers

Area = (0.9 x luff x foot), or

Area = (0.9 x I x J ), where:~

• 'I' is the distance from the highest spinnaker halyard to the deck, and
• 'J' is the length of the spinnaker pole.

Asymmetric Spinnakers

Area = (0.8 x luff x foot), or

Area = (0.8 x  I  x  J ), where:~

• 'I'  is the distance from the highest spinnaker halyard to the deck, and
• 'J'  is the distance from the front face of the mast to the attachment block for the tackline.

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Is Carrying Storm Sails on Your Cruising Boat Really Necessary?

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Using Spinnaker Sails for Cruising without the Drama!

When the wind moves aft and the lightweight genoa collapses, you need one of the spinnaker sails. But which one; conventional or asymmetric? Star cut, radial head or tri-radial?

The Mainsail on a Sailboat Is a Powerful Beast and Must Be Controlled

Learn how to hoist the mainsail, jibe it, tack it, trim it, reef it and control it with the main halyard, the outhaul, the mainsheet and the kicker.

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Meaning of sail in English

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sail verb ( TRAVEL )

• If we sail in a southeastward direction we'll reach land .
• I'd like to learn to sail, but I haven't the time .
• The Kon-Tiki sailed across the Pacific Ocean propelled by wind power .
• We sailed slowly down the river .
• We sailed in a southwestward direction .
• age of sail
• ocean-going
• under sail idiom

You can also find related words, phrases, and synonyms in the topics:

sail verb ( MOVE QUICKLY )

• speed He ran back to his car and sped off.
• race She raced over and hugged me.
• fly She flew across the room just in time to stop the baby from falling off the chair.
• belt UK Traffic was belting along the motorway.
• tear A fire truck came tearing down the road.
• streak Bullets streaked across the sky.
• bowl down/along something
• make good time idiom
• make haste idiom

Phrasal verbs

Sail noun ( material ).

• bilge water
• boiler room
• superstructure

sail noun ( TRAVEL )

• break-journey
• circumnavigation

sail | Intermediate English

Phrasal verb, examples of sail, translations of sail.

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Definition of sail

 (Entry 1 of 2)

Illustration of sail

• 1 flying jib
• 3 forestaysail
• 5 fore gaff-topsail
• 6 main-topmast staysail
• 8 main gaff-topsail

Definition of sail  (Entry 2 of 2)

intransitive verb

transitive verb

Examples of sail in a Sentence

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sail.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Middle English, from Old English segl ; akin to Old High German segal sail

before the 12th century, in the meaning defined at sense 1a(1)

before the 12th century, in the meaning defined at intransitive sense 1a

Phrases Containing sail

• press of sail
• studding sail
• at / in full sail
• square sail
• sail close to the wind
• sail through

Dictionary Entries Near sail

Saigon cinnamon

Cite this Entry

“Sail.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/sail. Accessed 1 Apr. 2024.

Kids Definition

Kids definition of sail.

Kids Definition of sail  (Entry 2 of 2)

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Guide to Understanding Sail Rig Types (with Pictures)

There are a lot of different sail rig types and it can be difficult to remember what's what. So I've come up with a system. Let me explain it in this article.

What are the different types of sail rig? The sail rig is determined by the number of masts and the layout and shape of sails. Most modern ships are fore-and-aft rigged, while old ships are square-rigged. Rigs with one mast are sloops and cutters. Ketches, yawls, brigs, and schooners have two masts. Barques have three masts. Rigs can contain up to seven masts.

'Yeah, that's a gaff brig, and that a Bermuda cutter' - If you don't know what this means (neither did I) and want to know what to call a two-masted ship with a square-rigged mainsail, this article is definitely for you.

On this page:

More info on sail rig types, mast configurations and rig types, rigs with one mast, rigs with two masts, rigs with three masts, related questions.

This article is part 2 of my series on sails and rig types. Part 1 is all about the different types of sails. If you want to know everything there is to know about sails once and for all, I really recommend you read it. It gives a good overview of sail types and is easy to understand.

The Ultimate Guide to Sail Types and Rigs (with Pictures)

First of all, what is a sail rig? A sail rig is the way in which the sails are attached to the mast(s). In other words, it's the setup or configuration of the sailboat. The rig consists of the sail and mast hardware. The sail rig and sail type are both part of the sail plan. We usually use the sail rig type to refer to the type of boat.

Let's start by taking a look at the most commonly used modern sail rigs. Don't worry if you don't exactly understand what's going on. At the end of this article, you'll understand everything about rig types.

The sail rig and sail plan are often used interchangeably. When we talk of the sail rig we usually mean the sail plan . Although they are not quite the same. A sail plan is the set of drawings by the naval architect that shows the different combinations of sails and how they are set up for different weather conditions. For example a light air sail plan, storm sail plan, and the working sail plan (which is used most of the time).

So let's take a look at the three things that make up the sail plan.

The 3 things that make up the sail plan

I want to do a quick recap of my previous article. A sail plan is made up of:

• Mast configuration - refers to the number of masts and where they are placed
• Sail type - refers to the sail shape and functionality
• Rig type - refers to the way these sails are set up on your boat

I'll explore the most common rig types in detail later in this post. I've also added pictures to learn to recognize them more easily. ( Click here to skip to the section with pictures ).

How to recognize the sail plan?

So how do you know what kind of boat you're dealing with? If you want to determine what the rig type of a boat is, you need to look at these three things:

• Check the number of masts, and how they are set up.
• You look at the type of sails used (the shape of the sails, how many there are, and what functionality they have).
• And you have to determine the rig type, which means the way the sails are set up.

Below I'll explain each of these factors in more detail.

The most common rig types on sailboats

To give you an idea of the most-used sail rigs, I'll quickly summarize some sail plans below and mention the three things that make up their sail plan.

• Bermuda sloop - one mast, one mainsail, one headsail, fore-and-aft rigged
• Gaff cutter - one mast, one mainsail, two staysails, fore-and-aft rigged
• Gaff schooner - two-masted (foremast), two mainsails, staysails, fore-and-aft rigged
• Gaff ketch - two-masted (mizzen), two mainsails, staysails, fore-and-aft rigged
• Full-rigged ship or tall ship - three or more masts, mainsail on each mast, staysails, square-rigged

The first word is the shape and rigging of the mainsail. So this is the way the sail is attached to the mast. I'll go into this later on. The second word refers to the mast setup and amount of sails used.

Most sailboats are Bermuda sloops. Gaff-rigged sails are mostly found on older, classic boats. Square-rigged sails are generally not used anymore.

But first I want to discuss the three factors that make up the sail plan in more detail.

Ways to rig sails

There are basically two ways to rig sails:

• From side to side, called Square-rigged sails - the classic pirate sails
• From front to back, called Fore-and-aft rigged sails - the modern sail rig

Almost all boats are fore-and-aft rigged nowadays.

Square sails are good for running downwind, but they're pretty useless when you're on an upwind tack. These sails were used on Viking longships, for example. Their boats were quicker downwind than the boats with fore-and-aft rigged sails, but they didn't handle as well.

The Arabs first used fore-and-aft rigged sails, making them quicker in difficult wind conditions.

Quick recap from part 1: the reason most boats are fore-and-aft rigged today is the increased maneuverability of this configuration. A square-rigged ship is only good for downwind runs, but a fore-and-aft rigged ship can sail close to the wind, using the lift to move forward.

The way the sails are attached to the mast determines the shape of the sail. The square-rigged sails are always attached the same way to the mast. The fore-and-aft rig, however, has a lot of variations.

The three main sail rigs are:

• Bermuda rig - most used - has a three-sided (triangular) mainsail
• Gaff rig - has a four-sided mainsail, the head of the mainsail is guided by a gaff
• Lateen rig - has a three-sided (triangular) mainsail on a long yard

The Bermuda is the most used, the gaff is a bit old-fashioned, and the lateen rig is outdated (about a thousand years). Lateen rigs were used by the Moors. The Bermuda rig is actually based on the Lateen rig (the Dutch got inspired by the Moors).

Other rig types that are not very common anymore are:

• Junk rig - has horizontal battens to control the sail
• Settee rig - Lateen with the front corner cut off
• Crabclaw rig

Mast configuration

Okay, we know the shape of the mainsail. Now it's time to take a look at the mast configuration. The first thing is the number of masts:

• one-masted boats
• two-masted boats
• three-masted boats
• four masts or up
• full or ship-rigged boats - also called 'ships' or 'tall ships'

I've briefly mentioned the one and two mast configurations in part 1 of this article. In this part, I'll also go over the three-masted configurations, and the tall ships as well.

A boat with one mast has a straightforward configuration because there's just one mast. You can choose to carry more sails or less, but that's about it.

A boat with two masts or more gets interesting. When you add a mast, it means you have to decide where to put the extra mast: in front, or in back of the mainmast. You can also choose whether or not the extra mast will carry an extra mainsail. The placement and size of the extra mast are important in determining what kind of boat we're dealing with. So you start by locating the largest mast, which is always the mainmast.

From front to back: the first mast is called the foremast. The middle mast is called the mainmast. And the rear mast is called the mizzenmast.

What is the mizzenmast? The mizzenmast is the aft-most (rear) mast on a sailboat with three or more masts or the mast behind the mainmast on a boat with two masts. The mizzenmast carries the mizzen sail. On a two-masted boat, the mizzenmast is always (slightly) smaller than the mainmast. What is the purpose of the mizzen sail? The mizzen sail provides more sail area and flexibility in sail plan. It can be used as a big wind rudder, helping the sailor to have more control over the stern of the ship. It pushes the stern away from the wind and forces the bow in the opposite way. This may help to bring the bow into the wind when at anchor.

I always look at the number of masts first, because this is the easiest to spot. So to make this stuff more easy to understand, I've divided up the rig types based on the number of masts below.

Why would you want more masts and sail anyways?

Good question. The biggest advantage of two masts compared to one (let's say a ketch compared to a sloop), is that it allows you to use multiple smaller sails to get the same sail area. It also allows for shorter masts.

This means you reduce the stress on the rigging and the masts, which makes the ketch rig safer and less prone to wear and tear. It also doesn't capsize as quickly. So there are a couple of real advantages of a ketch rig over a sloop rig.

In the case of one mast, we look at the number of sails it carries.

Boats with one mast can have either one sail, two sails, or three or more sails.

Most single-masted boats are sloops, which means one mast with two sails (mainsail + headsail). The extra sail increases maneuverability. The mainsail gives you control over the stern, while the headsail gives you control over the bow.

Sailor tip: you steer a boat using its sails, not using its rudder.

The one-masted rigs are:

• Cat - one mast, one sail
• Sloop - one mast, two sails
• Cutter - one mast, three or more sails

The cat is the simplest sail plan and has one mast with one sail. It's easy to handle alone, so it's very popular as a fishing boat. Most (very) small sailboats are catboats, like the Sunfish, and many Laser varieties. But it has a limited sail area and doesn't give you the control and options you have with more sails.

The most common sail plan is the sloop. It has one mast and two sails: the main and headsail. Most sloops have a Bermuda mainsail. It's one of the best racing rigs because it's able to sail very close to the wind (also called 'weatherly'). It's one of the fastest rig types for upwind sailing.

It's a simple sail plan that allows for high performance, and you can sail it short-handed. That's why most sailboats you see today are (Bermuda) sloops.

This rig is also called the Marconi rig, and it was developed by a Dutch Bermudian (or a Bermudian Dutchman) - someone from Holland who lived on Bermuda.

A cutter has three or more sails. Usually, the sail plan looks a lot like the sloop, but it has three headsails instead of one. Naval cutters can carry up to 6 sails.

Cutters have larger sail area, so they are better in light air. The partition of the sail area into more smaller sails give you more control in heavier winds as well. Cutters are considered better for bluewater sailing than sloops (although sloops will do fine also). But the additional sails just give you a bit more to play with.

Two-masted boats can have an extra mast in front or behind the mainmast. If the extra mast is behind (aft of) the mainmast, it's called a mizzenmast . If it's in front of the mainmast, it's called a foremast .

If you look at a boat with two masts and it has a foremast, it's most likely either a schooner or a brig. It's easy to recognize a foremast: the foremast is smaller than the aft mast.

If the aft mast is smaller than the front mast, it is a sail plan with a mizzenmast. That means the extra mast has been placed at the back of the boat. In this case, the front mast isn't the foremast, but the mainmast. Boats with two masts that have a mizzenmast are most likely a yawl or ketch.

The two-masted rigs are:

• Lugger - two masts (mizzen), with lugsail (a cross between gaff rig and lateen rig) on both masts
• Yawl - two masts (mizzen), fore-and-aft rigged on both masts. Main mast is much taller than mizzen. Mizzen without a mainsail.
• Ketch - two masts (mizzen), fore-and-aft rigged on both masts. Main mast with only slightly smaller mizzen. Mizzen has mainsail.
• Schooner - two masts (foremast), generally gaff rig on both masts. Main mast with only slightly smaller foremast. Sometimes build with three masts, up to seven in the age of sail.
• Bilander - two masts (foremast). Has a lateen-rigged mainsail and square-rigged sails on the foremast and topsails.
• Brig - two masts (foremast), partially square-rigged. The main mast carries small lateen-rigged sail.

The yawl has two masts that are fore-and-aft rigged and a mizzenmast. The mizzenmast is much shorter than the mainmast, and it doesn't carry a mainsail. The mizzenmast is located aft of the rudder and is mainly used to increase helm balance.

A ketch has two masts that are fore-and-aft rigged. The extra mast is a mizzenmast. It's nearly as tall as the mainmast and carries a mainsail. Usually, the mainsails of the ketch are gaff-rigged, but there are Bermuda-rigged ketches too. The mizzenmast is located in front of the rudder instead of aft, as on the yawl.

The function of the ketch's mizzen sail is different from that of the yawl. It's actually used to drive the boat forward, and the mizzen sail, together with the headsail, are sufficient to sail the ketch. The mizzen sail on a yawl can't really drive the boat forward.

Schooners have two masts that are fore-and-aft rigged. The extra mast is a foremast which is generally smaller than the mainmast, but it does carry a mainsail. Schooners are also built with a lot more masts, up to seven (not anymore). The schooner's mainsails are generally gaff-rigged.

The schooner is easy to sail but not very fast. It handles easier than a sloop, except for upwind, and it's only because of better technology that sloops are now more popular than the schooner.

The brig has two masts. The foremast is always square-rigged. The mainmast can be square-rigged or is partially square-rigged. Some brigs carry a lateen mainsail on the mainmast, with square-rigged topsails.

Some variations on the brig are:

Brigantine - two masts (foremast), partially square-rigged. Mainmast carries no square-rigged mainsail.

Hermaphrodite brig - also called half brig or schooner brig. Has two masts (foremast), partially square-rigged. Mainmast carries a gaff rig mainsail and topsail, making it half schooner.

Three-masted boats are mostly barques or schooners. Sometimes sail plans with two masts are used with more masts.

The three-masted rigs are:

• Barque - three masts, fore, and mainmast are square-rigged, the mizzenmast is usually gaff-rigged. All masts carry mainsail.
• Barquentine - three masts, foremast is square-rigged, the main and mizzenmast are fore-and-aft rigged. Also called the schooner barque.
• Polacca - three masts, foremast is square-rigged, the main and mizzenmast are lateen-rigged.
• Xebec - three masts, all masts are lateen-rigged.

A barque has three or four masts. The fore and mainmast are square-rigged, and the mizzen fore-and-aft, usually gaff-rigged. Carries a mainsail on each mast, but the mainsail shape differs per mast (square or gaff). Barques were built with up to five masts. Four-masted barques were quite common.

Barques were a good alternative to full-rigged ships because they require a lot fewer sailors. But they were also slower. Very popular rig for ocean crossings, so a great rig for merchants who travel long distances and don't want 30 - 50 sailors to run their ship.

Barquentine

The barquentine usually has three masts. The foremast is square-rigged and the main and mizzenmast fore-and-aft. The rear masts are usually gaff-rigged.

Faster than a barque or a schooner, but the performance is worse than both.

The polacca or polacre rig has three masts with a square-rigged foremast. The main and mizzenmast are lateen-rigged. Beautiful boat to see. Polacca literally means 'Polish' (it's Italian). It was a popular rig type in the Mediterranean in the 17th century. It looks like the xebec, which has three lateen-rigged masts.

Fun fact: polaccas were used by a Dutch sailor-turned-Turkish-pirate (called Murat Reis).

The xebec is a Mediterranean trading ship with three masts. All masts are lateen-rigged. I couldn't find any surviving xebecs, only models and paintings. So I guess this rig is outdated a long time.

A boat with three or more masts that all carry square-rigged sails is called a ship, a tall ship, or a full-rigged ship. So it's at this point that we start calling boats 'ships'. It has nothing to do with size but with the type of rigging.

More sails mean less stress on all of them. These ships use a lot of sails to distribute the forces, which reduces the stress on the rigging and the masts. Square sails mean double the sail area in comparison to triangular sails.

They are quite fast for their size, and they could outrun most sloops and schooners (schooners were relatively a lot heavier). The reason is that tall ships could be a lot longer than sloops, giving them a lot of extra hull speed. Sloops couldn't be as large because there weren't strong enough materials available. Try making a single triangular sail with a sail area of over 500 sq. ft. from linen.

So a lot of smaller sails made sense. You could have a large ship with a good maximum hull speed, without your sails ripping apart with every gust of wind.

But you need A LOT of sailors to sail a tall ship: about 30 sailors in total to ie. reef down sails and operate the ship. That's really a lot.

Tall ships are used nowadays for racing, with the popular tall ship races traveling the world. Every four years I go and check them out when they are at Harlingen (which is very close to where I live).

Check out the amazing ships in this video of the tall ship races last year near my hometown. (The event was organized by friends of mine).

What is the difference between a schooner and a sloop? A schooner has two masts, whereas the sloop only has one. The schooner carries more sails, with a mainsail on both masts. Also, sloops are usually Bermuda-rigged, whereas schooners are usually gaff-rigged. Most schooners also carry one or two additional headsails, in contrast to the single jib of the sloop.

What do you call a two-masted sailboat? A two-masted sailboat is most likely a yawl, ketch, schooner, or brig. To determine which one it is you have to locate the mainmast (the tallest). At the rear: schooner or brig. In front: yawl or ketch. Brigs have a square-rigged foremast, schooners don't. Ketches carry a mainsail on the rear mast; yawls don't.

What is a sloop rig? A sloop rig is a sailboat with one mast and two sails: a mainsail and headsail. It's a simple sail plan that handles well and offers good upwind performance. The sloop rig can be sailed shorthanded and is able to sail very close to the wind, making it very popular. Most recreational sailboats use a sloop rig.

What is the difference between a ketch and a yawl? The most important difference between a ketch and a yawl are the position and height of the mizzenmast. The mizzenmast on a yawl is located aft of the rudder, is shorter than the mainmast and doesn't carry a mainsail. On a ketch, it's nearly as long as the mainmast and carries a mainsail.

There are a wonderful lots of DIY changeability shows on the cable airwaves these days.

Rick the rigger

There are SO many errors on this site it really should be taken down.

First major mistake is to say you are no longer afraid of the sea.

One that truly gets up my nose is the term ‘fully’ rigged ship. It’s a FULL rigged ship!! Your mast names are the wrong way round and just because there may be 3 it doesn’t automatically mean the one in the middle is the main.

I could go on and totally destroy your over inflated but fragile ego but I won’t. All I will say is go learn a lot more before posting.

Shawn Buckles

Thanks for your feedback. If you like to point out anything more specific, please let me know and I will update the articles. I’ve changed fully-rigged to full-rigged ship - which is a typo on my part. I try to be as concise as I can, but, obviously, we all make mistakes every now and then. The great thing about the internet is that we can learn from each other and update our knowledge together.

If you want to write yourself and share your knowledge, please consider applying as a writer for my blog by clicking on the top banner.

Thanks, Shawn

Well, I feel that I’ve learned a bit from this. The information is clear and well laid out. Is it accurate? I can’t see anything at odds with the little I knew before, except that I understood a xebec has a square rigged centre mainmast, such as the Pelican ( https://www.adventureundersail.com/ )

Hi, Shawn, You forgot (failed) to mention another type of rig? The oldest type of rig known and still functions today JUNK RIG!

Why are so many of the comments here negative. I think it is wonderful to share knowledge and learn together. I knew a little about the subject (I’m an Aubrey-Maturin fan!) but still found this clarified some things for me. I can’t comment therefore on the accuracy of the article, but it seems clear to me that the spirit of the author is positive. We owe you some more bonhomme I suggest Shawn.

As they say in the Navy: “BZ” - for a good article.

Been reading S.M. Stirling and wanted to understand the ship types he references. Thank you, very helpful.

This site is an awesome starting point for anyone who would like to get an overview of the subject. I am gratefull to Shawn for sharing - Thanks & Kudos to you! If the negative reviewers want to get a deeper technical knowledge that is accurate to the n-th then go study the appropriate material. Contribute rather than destroy another’s good work. Well done Shawn. Great job!

Good stuff Shawn - very helpful. As a novice, it’s too confusing to figure out in bits and pieces. Thanks for laying it out.

First of all I have to say that Rick ‘the rigger’ is obviously the one with the “over inflated but fragile ego” and I laughed when you suggested he share his knowledge on your blog, well played!

As for the content it’s great, hope to read more soon!

Alec Lowenthal

Shawn, I have a painting of a Spanish vessel, two masted, with. Lateen sails on both masts and a jib. The mainsail is ahead of the main mast (fore) and the other is aft of the mizzen mast. Would this be what you call lugger rig? I have not seen a similar picture. Thanks, Alec.

Thank you for your article I found easy to read and understand, and more importantly remember, which emphasises the well written.. Pity about the negative comments, but love your proactive responses!

This vessel, “SEBASTIAN” out of Garrucha, Almería, España, was painted by Gustave Gillman in 1899.

Sorry, picture not accepted!

Thank you for a very informative article. I sail a bit and am always looking for more knowledge. I like the way you put forth your info and I feel if you can’t say anything positive, then that person should have their own blog or keep their opinions to their-self. I will be looking for more from you. I salute your way of dealing with negative comments.

Thank you for a great intro to sailing boats! I searched different sailboats because I use old sails tp make bags and wanted to learn the difference. Way more than I ever expected. Thanks for all the work put in to teach the rest of us.

Your description of a cutter is lacking, and your illustrations of “cutters” are actually cutter-rigged sloops. On a true cutter, the mast is moved further aft (with more than 40% of the ship forward of the mast). A sloop uses tension in the backstay to tension the luff of the foresail. The cutter can’t do this.

Also, a bermuda-rigged ketch will have a line running from the top of the mainmast to the top of the mizzenmast.

wow great guide to rig types! thanks

Interesting guide, however I am confused about the description of the brig. You say the main mast on a brig can have a lateen sail, but in your picture it looks like a gaff sail to me. How is it a lateen sail?

Hi Shawn, thank you for taking the time to share this information. It is clear and very helpful. I am new to sailing and thinking of buying my own blue water yacht. The information you have supplied is very useful. I still am seeking more information on performance and safety. Please keep up the good work. Best Regards

mickey fanelli

I’m starting to repair a model sailboat used in the lake I have three masts that have long been broken off and the sails need replacement. So my question is there a special relationship between the three masts I do have reminents of where the masts should go. they all broke off the boat along with the sails I can figure out where they go because of the old glue marks but it makes no sense. or does it really matter on a model thank you mickey

Cool, total novice here. I have learnt a lot. Thanks for sharing - the diagrams along with the text make it really easy to understand, especially for a beginner who hasn’t even stepped on a sailing boat.

Daryl Beatt

Thank you. Cleared up quite a few things for me. For example, I was familiar with the names “Xebecs” and “Polaccas” from recent reading about the Barbary War. I had gathered that the two Barbary types were better suited to sailing in the Med, but perhaps they were less able to be adaptable to military uses,(but one might assume that would be ok if one plans to board and fight, as opposed to fight a running gun duel). Specifically, the strangely one sided August 1, 1801 battle between the USS Enterprise under Lt. John Sterett and the Polacca cruiser Tripoli under Admiral Rais Mahomet Rous. On paper both ships seemed nearly equal in size, guns and crew, but pictures of the battle are confusing. While the Enterprise is usually rendered as the familiar schooner, the polacca Tripoli has been pictured in radically different ways. Thus the Wikipedia picture by Hoff in 1878 used to illustrate the Battle shows a Brig design for Tripoli, indicating 77 years later, polaccas were no longer common.

Lee Christiansen

I am curious as to what you would call a modern race boat with a fractional jib,not equipped for full masthead hoist? Thanks Lee

Thanks Guy: The information and pictures really eliminate a lot of the mystery of the terminology and the meanings. Also appreciate the insight of the handling idiosyncrasies “hand” (staff) requirements to manage a vessel for one that has not been on the water much. I long to spend significant time afloat, but have concern about the ability to handle a vessel due to advancing age. The Significant Other prefers to sit (in AC comfort)and be entertained by parties of cruise line employees. Thanks again for the information.

Gordon Smith

Your discussion made no mention of the galleon, a vessel with either square-rigged Fore and Main masts and a shorter lateen-rigged Mizzen, or, on larger galleons, square-rigged Fore and Main masts, with a lateen-rigged Mizzen and a lateen-rigged Bonaventure mast, both shorter than either the Fore or Main masts. Also, it was not uncommon for a galleon to hoist a square-rigged bowsprit topsail in addition to the usual square-rigged spritsail.

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Baltimore cruises to reroute after bridge collapse pauses port traffic

Carnival, royal caribbean will move some operations to norfolk while baltimore recovers from key bridge collapse.

Cruise lines are scrambling to make alternative plans and avoid the Port of Baltimore while officials suspend vessel traffic amid cleanup and rescue efforts around the Francis Scott Key Bridge collapse.

Three major cruise lines sail from Baltimore, though no ships were in port Tuesday morning. The next cruise was scheduled to depart Sunday, but its operator confirmed late Tuesday afternoon that the voyage would instead head out from Norfolk.

Amira M. Hairston, a spokeswoman for the Baltimore port, said in an email that the status of the upcoming cruise ship schedule is not yet known.

“At this time we do not know how long vessel traffic will be suspended. As soon as that is determined we will provide an update. Until then please keep those involved in your prayers,” Hairston wrote.

Royal Caribbean International’s Vision of the Seas left Saturday for a 12-night southern Caribbean cruise with plans to return April 4. The cruise line said in a statement Tuesday that it was “closely monitoring the situation, and our port logistics team is currently working on alternatives for Vision of the Seas’ ongoing and upcoming sailings.”

On Thursday, the cruise company said the current sailing would end in Norfolk.

“Our guests on board will be provided compensation and complimentary shuttle transportation as well as Wi-Fi and phone calls to adjust their travel arrangements,” Royal Caribbean said.

Upcoming cruises on April 4 and 12 will sail from Norfolk as well, and passengers will be compensated for the change. The ship was already scheduled for maintenance in the Bahamas after the April 12 cruise.

“We are deeply saddened by the tragedy and collapse of the Francis Scott Key Bridge and extend our heartfelt prayers to all those impacted,” the company said.

Carnival Legend set off Sunday for a seven-day Bahamas cruise; the ship was scheduled to return March 31 and depart for its next sailing the same day. Instead of coming back to Baltimore, Carnival said late Tuesday, it will end its trip in Norfolk, and free buses will bring passengers back to Baltimore.

The ship’s next seven-day cruise will leave Norfolk and return to the port. In a news release , Carnival said it would temporarily move Baltimore operations to Norfolk “while Key Bridge rescue and cleanup efforts continue.”

“Our thoughts remain with the impacted families and first responders in Baltimore,” Christine Duffy, president of Carnival Cruise Line, said in a statement. “We appreciate the pledge made by President Biden today to dedicate all available resources to reopen Baltimore Harbor to marine traffic as soon as possible. As those plans are finalized, we will update our future cruise guests on when we will return home to Baltimore, but in the meantime, we appreciate the quick response and support from officials in Norfolk.”

Carnival Pride is supposed to start sailing from Baltimore next month, mostly to the Bahamas and eastern Caribbean.

Norwegian Cruise Line does not have cruises scheduled out of the port until later this year. American Cruise Lines, a U.S. river cruise operator, has Chesapeake Bay trips on small vessels scheduled from Baltimore starting in May. The cruise line said it will monitor developments “and make adjustments if needed.”

Cruise Lines International Association (CLIA) said it was “deeply saddened” by the bridge collapse and was closely following the situation. “Right now, the most important thing to do is to allow the emergency workers to do their work,” the group wrote in a statement.

This year, 12 ships are scheduled to make a total of 115 calls at the Port of Baltimore, the industry association said. With room for roughly 2,000 or 2,100 passengers at double occupancy, most Baltimore-based ships are much smaller than the record-breaking behemoths that sail from Florida ports.

“Any adjustments to current cruise activity at the port will be announced as soon as available by the individual cruise lines,” CLIA said in its statement.

A news release issued last month by Maryland Gov. Wes Moore’s office said that more than 444,000 individuals cruised out of the Port of Baltimore last year, the most since 2012. The Maryland Port Administration said in a news release last year that the cruise industry generates nearly 400 jobs and $63 million in revenue every year for local businesses.

The port positions itself as a convenient option for cruising year-round, thanks to its location off Interstate 95 and plentiful parking. More than 40 million people live within a six-hour drive of the city, the port administration says.

Baltimore bridge collapse

How it happened: Baltimore’s Francis Scott Key Bridge collapsed after being hit by a cargo ship . The container ship lost power shortly before hitting the bridge, Maryland Gov. Wes Moore (D) said. Video shows the bridge collapse in under 40 seconds.

Victims: Divers have recovered the bodies of two construction workers , officials said. They were fathers, husbands and hard workers . A mayday call from the ship prompted first responders to shut down traffic on the four-lane bridge, saving lives.

Economic impact: The collapse of the bridge severed ocean links to the Port of Baltimore, which provides about 20,000 jobs to the area . See how the collapse will disrupt the supply of cars, coal and other goods .

Rebuilding: The bridge, built in the 1970s , will probably take years and cost hundreds of millions of dollars to rebuild , experts said.

UW dock renovations pose threat to 75-year sailing tradition, yacht club students say

S tudents in the Washington Yacht Club (WYC) accuse the University of Washington (UW) of working to stop a 75-year history of teaching students to sail.

Those students told KOMO News that the UW’s plans to renovate the docks near Husky Stadium will eliminate the docks they use to store their 70 boats, thus taking away their ability to teach students to sail.

“It would really mean, like a death blow to the community,” said Renee Chien, the current Rear Commodore of WYC.

The U.W. has plans to repair and remove docks. The total dock space will be reduced by 4,000 square feet. 

“And the university has actually given us a statement as of March that we will no longer be able to keep beyond one boat on the dock,” said Chien. 

UW told KOMO News that the club only needs to move some of the club's boats short term.

“We have up to 75 boats. We’ve got everything from sailboats up to a 44-foot ocean-going vessel and everything in between,” said William Rae, another member of WYC.

Once the renovation is completed in 2025, the university told KOMO that UW recreation will no longer maintain dock storage space, so the WYC and the Union Bay Rowing Club would each be able to maintain just one boat at the dock.

“It would mean the loss of something that I have poured my heart and soul into,” said Chien. “And I feel like that is the case for most people that I work with in the WYC, who like are united by their common love of sailing.”

Chien told KOMO she just joined the WYC in November, to learn to sail and loves it so much, she’s already been out sailing 22 of the past 23 days.

“I grew up in Taipei, Taiwan and as an international student, I wouldn’t have felt like my roots were planted firmly anywhere. I thought maybe I would stay in Seattle maybe I wouldn’t, but I didn’t feel attached and it was really because of sailing and because of my access to the water and this newfound connection that I have with the Puget Sound that I feel like I would like to stay here to keep sailing and keep building the community here,” explained Chien.

Perhaps the best part of getting out on one of the 70 boats to learn to sail, is the price. Students pay just $39 per quarter.

“And if we lose that that’s a huge loss to people being able to enter into a sport that traditionally has such a high barrier,” said Rae.

Sailing lessons in Seattle cost several hundred dollars a month.

“We’re pretty unique, definitely in the Pacific Northwest, and really for student-run organizations we believe we're unique in the country,” said Rae.

UW's tradition of sailgating right outside Husky Stadium is another unique Pacific Northwest tradition and some accuse the University of putting profits from events like this over student benefit.

The renovation plan calls for adding new docks for large sailgating boats plus greater access for students and the public to rent kayaks and canoes.

“And we just want to emphasize that kayak rentals are $19 per hour our quarterly membership is $39 a quarter,” said Chien.

UW told KOMO that they are prioritizing Rec Clubs with the new waterfront plan, to expand student participation.

Construction on the docks and beach at the UW is scheduled to start in January and UW told KOMO that they are still working with the WYC through this process.

Baltimore bridge collapse wasn't first major accident for giant container ship Dali

Propulsion failed on the cargo ship that struck the Francis Key Bridge in Baltimore early Tuesday as it was leaving port, causing it to collapse into the frigid Patapsco River. Its crew warned Maryland officials of a possible collision because they had lost control.

“The vessel notified MD Department of Transportation (MDOT) that they had lost control of the vessel” and a collision with the bridge “was possible,” according to an unclassified Department of Homeland Security report. “The vessel struck the bridge causing a complete collapse.”

An official speaking on condition of anonymity confirmed to USA TODAY that the DHS’ Cybersecurity and Infrastructure Security Agency is working with federal, state, and local officials “to understand the potential impacts of this morning’s collapse of the Francis Scott Key Bridge.”

Clay Diamond, executive director, American Pilots’ Association, told USA TODAY power issues are not unusual on cargo ships, which are so large they cannot easily course correct.

“It’s likely that virtually every pilot in the country has experienced a power loss of some kind (but) it generally is momentary,” Diamond said. “This was a complete blackout of all the power on the ship, so that’s unusual. Of course this happened at the worst possible location.” 

The ship in Tuesday's crash, Dali, was involved in at least one prior accident when it collided with a shipping pier in Belgium.

That 2016 incident occurred as the Dali was leaving port in Antwerp and struck a loading pier made of stone, causing damage to the ship’s stern, according to VesselFinder.com, a site that tracks ships across the world. An investigation determined a mistake made by the ship’s master and pilot was to blame.

No one was injured in that crash, although the ship required repair and a full inspection before being returned to service. The pier – or berth – was also seriously damaged and had to be closed.

VesselFinder reports that the Dali was chartered by Maersk, the same company chartering it during the Baltimore harbor incident.

The 9-year-old container ship had passed previous inspections during its time at sea, but during one such inspection in June at the Port of San Antonio in Chile, officials discovered a deficiency with its "propulsion and auxiliary machinery (gauges, thermometers, etc)," according to the Tokyo MOU, an intergovernmental maritime authority in the Asia-Pacific region.

The report provided no other information about the deficiency except to note that it was not serious enough to remove the ship from service.

Follow here for live updates: Baltimore's Key Bridge collapses after ship strike; construction crew missing: Live Updates

Why did Dali crash into the Baltimore bridge?

Officials said Tuesday they’re investigating the collision, including whether systems on board lost electricity early Tuesday morning, which could be related to mechanical failure, according to a U.S. official who was not authorized to speak publicly.

Accidents at sea, known as marine casualties, are not uncommon, the source told USA TODAY. However, “allisions,” in which a moving object strikes a stationary one with catastrophic results, are far less common. The investigation of the power loss aboard the Dali, a Singapore-flagged vessel, will be a high priority.

In a video posted to social media, lights on the Dali shut off, then turned back on, then shut off again before the ship struck a support pier on the bridge.

Numerous cargo and cruise ships have lost power over the years.

The International Convention for the Safety of Life at Sea requires all international vessels to have two independent sources of electricity, both of which should be able to maintain the ship's seaworthiness on their own, according to a safety study about power failures on ships , citing the International Convention for the Safety of Life at Sea.

The Dali's emergency generator was likely responsible for the lights coming back on after the initial blackout, Diamond said.

“There was still some steerage left when they initially lost power,” he said. “We’ve been told the ship never recovered propulsion. The emergency generator is a diesel itself – so if you light off the generator, that’s also going to put off a puff of exhaust.”

Under maritime law, all foreign flagged vessels must be piloted into state ports by a state licensed pilot so the Dali's pilot is licensed by Association of Maryland Pilots .

Diamond described the incident based on information from the Maryland agency that licensed the pilot aboard the ship. His organization represents that group and all other state piloting agencies in the US.

“The pilot was directing navigation of the ship as it happened,” he said. “He asked the captain to get the engines back online. They weren’t able to do that, so the pilot took all the action he could. He tried to steer, to keep the ship in the channel. He also dropped the ship’s anchor to slow the ship and guide the direction.

“Neither one was enough. The ship never did regain its engine power.”

How big is the Dali ship?

The Dali is a 984-foot container vessel built in 2015 by Hyundai Heavy Industries in South Korea. With a cruising speed of about 22 knots – roughly 25 mph. It has traveled the world carrying goods from port to port.

The ship, constructed of high-strength steel, has one engine and one propeller, according to MarineTraffic.com.

The Dali arrived in Baltimore on Sunday from the Port of Norfolk in Virginia. Before that, it had been in New York and came through the Panama Canal.

It remains at the scene of the collapse as authorities investigate.

Who owns and operates the Dali?

It is owned by the Singapore-based Grace Ocean Pte Ltd but managed by Synergy Marine Group, also based in Singapore. It was carrying Maersk customers’ cargo, according to a statement from the shipping company.

“We are deeply concerned by this incident and are closely monitoring the situation,” Maersk said in the statement. 

Synergy, which describes itself as a leading ship manager with more than 600 vessels under its guidance, issued a statement on its website acknowledging the incident and reporting no injuries among its crew and no pollution in the water. There were two pilots on board and 22 crew members in all, according to Synergy, all of them from India.

USA TODAY reached out to Synergy on Tuesday, but the company did not immediately return a call seeking comment.

Contributing: Josh Susong

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Baltimore Port: What impact will bridge collapse have on shipping?

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Current status of cargo ships inside port, cruise ships, london metal exchange warehouses, bunker fuel.

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US raises concern over convictions of rights advocates in Vietnam

The U.S. State Department on Monday raised concerns about convictions of rights advocates in Vietnam, including five since January, and called on the country's government to respect freedoms of expression, association, and religion.