j30 sailboat specifications

Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.

• Sailboat Guide

J/30 is a 29 ′ 9 ″ / 9.1 m monohull sailboat designed by Rod Johnstone and built by J Boats between 1979 and 1986.

• 2 / 9 Sea Bright, NJ, US 1983 J/30 $8,750 USD View
• 3 / 9 Sea Bright, NJ, US 1983 J/30 $8,750 USD View
• 4 / 9 Sea Bright, NJ, US 1983 J/30 $8,750 USD View
• 5 / 9 Sea Bright, NJ, US 1983 J/30 $8,750 USD View
• 6 / 9 Sea Bright, NJ, US 1983 J/30 $8,750 USD View
• 7 / 9 Sea Bright, NJ, US 1983 J/30 $8,750 USD View
• 8 / 9 Sea Bright, NJ, US 1983 J/30 $8,750 USD View
• 9 / 9 Sea Bright, NJ, US 1983 J/30 $8,750 USD View

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Embed this page on your own website by copying and pasting this code.

• About Sailboat Guide

©2024 Sea Time Tech, LLC

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

The J30 is a 29.83ft fractional sloop designed by Johnstone and built in fiberglass by J Boats between 1979 and 1986.

554 units have been built..

The J30 is a moderate weight sailboat which is a good performer. It is stable / stiff and has a low righting capability if capsized. It is best suited as a day-boat.

J30 for sale elsewhere on the web:

Main features

Login or register to personnalize this screen.

You will be able to pin external links of your choice.

See how Sailboatlab works in video

We help you build your own hydraulic steering system - Lecomble & Schmitt

Accommodations

Builder data, other photos.

Modal Title

The content of your modal.

Personalize your sailboat data sheet

• AROUND THE SAILING WORLD
• BOAT OF THE YEAR
• Email Newsletters
• America’s Cup
• St. Petersburg
• Caribbean Championship
• Boating Safety

• By Bill Brockway
• Updated: February 8, 2002

Designed by Rod Johnstone in 1978, the J/30 was in production from 1979 through 1986, with 545 hulls built. The average selling price is $28,000. It takes a crew of seven to race the boat.

The J/30 is noted for heavy-air performance. It holds its own in moderate and light air as well, but really excels when it’s windier. The boat has several cruising amenities (standing headroom, enclosed head, large icebox, and hot water) for those who want to dual-purpose.

Many J/30s suffer from core rot due to water penetration around the chainplates, which could cost as much as $3,000 to professionally repair. New laminated racing sails should be approximately $9,000, but one-design class rules stipulate a Dacron main, reducing the cost.

J/30 http://www.J30.org Typical monthly costs: $852 Annual budget range: $2,000 to $12,000 PHRF 135 to 144 LOA 29’11” LWL 25′ Beam 11’2″ Draft 5’3″ Disp. 6,700 lbs. SA 460 sq. ft.

Back to main story

• More: Sailboats
• More Sailboats

Nautor Swan Has A New Pocket Rocket

Pogo Launches its Latest Coastal Rocket

A Deeper Dive Into the Storm 18

2024 Boat of the Year Best Recreational Racer: Z24

How the Hobart Was Won

Into the Dink

Sally Helme, Marine Industry Icon Passes

SailGP’s New Zealanders Win Destructive Event No. 9

• Digital Edition
• Customer Service
• Privacy Policy
• Cruising World
• Sailing World
• Salt Water Sportsman
• Sport Fishing
• Wakeboarding

J/30 Detailed Review

If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of J/30. Built by J Boats and designed by Rod Johnstone, the boat was first built in 1979. It has a hull type of Fin w/transom hung rudder and LOA is 9.09. Its sail area/displacement ratio 19.47. Its auxiliary power tank, manufactured by undefined, runs on Diesel.

J/30 has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about J/30 and decide if it is a fit for your boating needs.

Boat Information

Boat specifications, sail boat calculation, rig and sail specs, auxillary power tank, contributions, who designed the j/30.

J/30 was designed by Rod Johnstone.

Who builds J/30?

J/30 is built by J Boats.

When was J/30 first built?

J/30 was first built in 1979.

How long is J/30?

J/30 is 7.62 m in length.

What is mast height on J/30?

J/30 has a mast height of 11.58 m.

Member Boats at HarborMoor

• Dealerships

Every detail about the J-30 has been engineered for exploration – designed to take you wherever you want to go.

Explore the design of the J-30 BLACK VISION, a finely-tuned balance of form and function.

Distinctive looks

The design of JAKTAR J-30 BLACK VISION does more than just stand out from the crowd: we set our own course, and head for uncharted waters. The result is an uncompromising boat, with every element tuned for stability and performance in all conditions.

Every detail considered

The interior of the J-30 BLACK VISION is designed with scrupulous attention to detail.

Exceptional engineering

Capabilities

See what’s possible with the J-30 BLACK VISION: built for speed, stability, and high load capacity.

Built for speed

The J-30 has a unique hull shape designed for performance at high speed. We started with strengthened aluminum, and finely tuned the boat’s center of gravity for optimum performance at speeds of up to 50 knots.

Stable in rough conditions

The unique hull of the J-30 gives the boat stability, no matter the wave direction. So you can stay comfortable, whichever way the waves roll.

High load capacity

Designed with plenty of storage space and a high load capacity, you can store enough gear, food and water supplies onboard the J-30 for multi-day off-grid adventures. All without compromising the balance of the boat – or its performance.

Versatility

From a few hours’ boating in high summer to a multi-day expedition into the winter wilderness, the J-30 is designed for a whole range of activities and lifestyles.

Deep sides for safe fishing

The J-30’s aft cockpit has waist-deep sides and plenty of space for spinning rods – keeping you stable and secure while you catch your dinner.

Easy to cook any food

Being on an adventure doesn’t mean you can’t make good food. The J-30’s fully-equipped kitchen space means you can cook a freshly-caught fish, serve it with a cold glass of wine, and reflect on the day’s adventure.

Take it anywhere

A reinforced hull and low height makes the J-30 as happy dropping anchor in hidden coves as it is gliding under bridges on its way into the marina. It fits on a trailer too, so you can tow it to any forgotten corner of the map that catches your eye.

Add any gear

Fix kayaks or mountain bikes to the roof. Store all your fishing gear. Stow solar batteries for extra power. The J-30’s aluminum construction makes it endlessly adaptable – bolt things on, strip things out, do whatever you need for the adventure.

Just open the smart door to head off to the bow

The front gas-lifted door allows you to easily go to the bow area whenever you need, would it be loading or unloading your gear or quick disembarking to explore a wild white sand beach.

The J-30 is built to endure, using marine-grade aluminum and anti-corrosion paint that will last for years to come.

Fully-welded aluminum

The J-30 is built from fully-welded marine-grade aluminum, for the ideal balance of strength and low weight. Every weld is carefully engineered to give the J-30 an exceptionally strong hull, while keeping the weight as low as possible.

Vertical sides

The J-30’s vertical sides give it excellent stability and improved handling in all conditions.

Anti-corrosion paint

Most aluminum boats are unpainted, which leaves them exposed to the elements. We use high-quality ocean-ready paint to reduce corrosion, and keep the boat looking good as new for decades to come.

With enough space to sleep 4 people, plus a hot shower and a kitchen space to keep everyone happy and fed.

Cozy space for four

The J-30 will happily sleep four people in deep comfort – with beds and storage enough for a multi-day trip.

Hot showers included

The J-30 has a proper loo and a hot shower. So you can stay comfortable, even in the wild.

Space to cook

Home Stylish galley Find in galley option everything you could only dream of cooking onboard: would it be a lovely dinner or morning espresso! Two storage compartments are ready to keep your lovely cookware. A spacious stainless steel uploading fridge will always keep your food and drink chilled and fresh. "A sink with a smart telescope faucet and gas stow gently covered with the meganite flat lids" making up a comfortable working surface.

Safety on the water is essential: the J-30 comes with grab rails everywhere you need them, and all the safety kit you’d expect.

The aft cockpit has deep sides, to keep everyone in the boat whatever the sea is doing.

Heavy duty grab rails

Welded aluminum grab rails mean you can always get a firm grip as you move around the boat.

Angles of safety

The J-30 has a vanishing stability point of 70 degrees – making it extremely difficult to capsize.

Design details

Carefully considered features for a better experience on board.

Spacious aft cockpit

There’s plenty of room in the aft cockpit for everyone to move around safely – and the boat’s center of gravity keeps it stable, no matter where your passengers are in the boat.

Panoramic visibility

Get exceptional visibility from the cockpit, with panoramic glassing that makes it easy to see in all directions. Essential when you’re navigating the backwaters of the Far North.

Easy access to the bow deck

Push a button and Jaktar’s gas-springed wing door opens from the cockpit to the bow deck – making it easy to load and unload your gear in wild places without a pier.

Technical data

Overall length (excl. Engine)

Weight (excl. Engine)

Fuel capacity

Deadrise (stern/bow)

Classification

Max speed range

Outboard engines

2х225–2х400 hp

Standard equipment

Full reverse chine bottom design

Welded offshore motor bracket with integral bottom sheet & full width swim platform

Ventilation System

Long and spacious under floor storage

Roof black painted welded rails

Side sofas with storage compartment option

Back To Highlights

General Features

Front cabin, helm station, electric and electronic systems, safety and comfort.

Extra equipment

Atlas II Radar mast

Audio system

Ergo style kitchen module

Full size head

Flush mounted compact 16L freezer/fridge

MORE EQUIPMENT

• Audio Entertainment system, incl. 4 x speakers • Control Unit For Fusion System

Navigation System

• Chartplotter Twin RAYMARINE AXIOM RV 12 • Echo sounder, bottom scanner • RAYMARINE Radar Quantum II • Raymarine VHF

More Equipment

• Cockpit shelf led lights. (Storage compartments led lights) • LED ambient lights, pilothouse • Underwater lights • LED search light w. remote control • LED aft cockpit flood light

Pre-rigging

• Twin Mercury Verado V8 with power steering, Activ Trim and VesselView link smart craft features

Bow thruster Side-Power SE40 w.joystick control

Aft cockpit folding 2х bench set with removable table

Other options

• Windlass • 1000 stainless 60w/AFT installation • DELTA style stainless anchor • Stainless roller • 30 meters of chain • Front boarding ladder • 280 AH Service battery • Two 100 Ah engine batteries • 100 Ah bow thruster battery • Shore Power 230V with 40Ah charger • 20L 12/220 volt insulated hot water boiler • Automatic pressure pump • Allows to have hot water in the kitchen module or/and shower • Livewell in the aft storage • Cushions for aft bench with back rests • Fishing rod holders

• Fishing rod holders

ATLAS II Radar mast with folding system

• 70 liter stainless uploading Vitrifrigo fridge. • Elca designed a hot/cold water sliding faucet. • Stainless steel sink. • CAN black glass surface designed one burner gas stove. • Big sliding drawer for cookware. Small fork/spoons drawer

Windlass option

• Windlass • 1000 stainless 60w/AFT installation • DELTA style stainless anchor • Stainless roller • 30 meters of chain • Front boarding ladder

Aft cockpit folding 2х bench set

Removable table with the telescopic leg

Cushion for aft bench with back rests

Livewell in the aft storage

[{{{type}}}] {{{reason}}}

{{texts.summary}} {{#options.result.rssIcon}} RSS {{/options.result.rssIcon}}

{{{_source.title}}} {{#_source.showPrice}} {{{_source.displayPrice}}} {{/_source.showPrice}}

{{{_source.displayUrl}}}

{{{_source.displayDate}}}

{{{_source.description}}}

{{#_source.additionalFields}} {{#title}} {{{label}}}: {{{title}}} {{/title}} {{/_source.additionalFields}}

• J/70 (22.8')
• J/80 (26.3')
• J/88 (29.2')
• J/9 (28.0')
• J/99 (32.6')
• J/111 (36.5')
• J/112E (36.0')
• J/121 (40.0')
• J/45 (45.6')
• Other J/Models
• J/Newsletter
• Sailing Calendar
• J/Classes & Owners
• J/Gear Store
• J/Owner Resources
• J/World Annapolis
• J/World San Diego
• Request Brochure/Info
• Find My Dealer
• Contact J/Boats
• Contact J/Composites
• Licensed Builders
• Articles & Reviews