cygnus 20 sailboat for sale

Boat Profile

A trailer-sailer ideal for gunkholing

From Issue   July 2023

I n late 2015, having left the demands of corporate work behind,  I returned to sailing after an absence of 35-plus years as crew on an Elan 310 fractional sloop, racing as a member of the Royal Brighton Yacht Club on Port Phillip Bay in Victoria, Australia. I quickly started looking around for a suitable sailboat that I could use on non-racing days. To my dismay, I discovered that Australia, unlike the U.K., U.S., and many European countries, offered a paucity of viable craft. Many, if not most, of the available boats ranged from 30 to 50 years in age and, more often than not, required a major overhaul or a dignified burial.

Over the next three years, I took several wrong turns and traveled hours to view duds with more holes than the ridiculous number of zeros in the asking price. But at last, I narrowed my search and settled on looking for a trailerable sailboat. I also knew that it needed to be a boat I could sail on my own with minimal help, if needed, from my wife. In late 2019, I happened upon Bluewater’s Cygnet 20.

T he Cygnet 20 originated in 2013 with a brief by Bluewater Cruising Yachts’ founder, David Bradburn, presented to yacht designers Will Hardcastle and Peter Lowe, to create an entry-level cruising yacht at an affordable price, with overnight or weekend accommodation for a couple or family of four. In August 2017, the prototype was launched at the Sydney Boat Show.

The 23′ design was inspired by England’s small traditional gaff-rigged working boats. It evokes the past with its plumb stem and only slightly raked transom, fixed bowsprit, samson post, transom-hung rudder on bronze pintles and gudgeons, classic portholes, and of course, tanbark sails and high-peaked gaff. In just a few years, the Cygnet 20 has become a highly sought-after inland-waterways cruiser across Australia, suitable for both river raids and competition racing; one was even recently delivered to Lake George in upstate New York.

Still in the shop under construction, the lifting coach roof, with its simple expanding cross-struts, is clearly visible. This unusual feature increases headroom, ventilation, and natural light in the cabin.

The hull is built in two pieces. The first, a hand-laid, solid fiberglass molding, incorporates the hull and centerboard case. The second molding, also of hand-laid fiberglass, includes the deck, cabin, cockpit, water-ballast tanks, and interior structures including the berths. The two moldings are joined by an external hull flange at the gunwale, which is capped with a Pacific teak (Vitex) rubrail. Between the rubrail and the coach roof there is a narrow side deck, which provides a secure walkway along the entire length of the boat. The mast, gaff, boom, and bowsprit are carbon fiber and the sails are from Hood Sails in Sydney.

The mast is stepped in a deck-mounted stainless-steel tabernacle supported by a stainless-steel compression post mounted on the keel; it is held in place with a stainless-steel through-pin. The rudder is hung on bronze pintles and is easily removable. The foiled centerboard is of laminated fiberglass with 220 lbs of internal lead ballast. The bowsprit is mounted to the samson post, which acts as a secure mooring bitt.

All surfaces (hull, deck, coach roof, and interior) are offered in Oyster White as standard, but there is a wide range of hull-color options.

The rigging, and most of the deck hardware, is from Ronstan or Harken including jib tracks, jam cleats, mooring cleats, and standing-rigging fittings. The shrouds are U-bolted through the hull-and-deck joint, while the forestay is bolted to the end of the bowsprit, and the bobstay is U-bolted to the stem just above the boot top. Tufnell blocks and Langman cordage are fitted as standard and further complement the traditional look and feel of gaff-rigged boats.

Construction, including all rigging and interior outfitting, is by Bluewater Cruising Yachts who offer various optional items. For example, I chose to add four wooden Pacific teak (Vitex) handrails, a pop-top incorporated with the companionway hatch that includes a color-matched WeatherMAX UV fabric enclosure that features roll-up window covers, bug screens, and complete companionway zip-through access. It allows for full standing headroom below and increases the cabin’s natural light and ventilation.

While the Cygnet 20 is a production boat, that does not prevent the enthusiast from adding their own personal touches. I have added cabin instruments, including a barometer and clock, and a depthsounder, fitted a removable anchor roller, replaced the original sheet bags, and am working on wooden racks for a hand-held VHF, binoculars, and iPad.

The spacious cockpit and high boom offer plenty of comfort for sailing with company, and with a tiller extension and running lines that all lead back to the cockpit, everything is easily to hand for the singlehanded sailor.

T he Cygnet 20 has a towing weight of 1,874 lbs. Loaded onto a single-axle trailer, offered by Bluewater, the Cygnet 20 can be towed by most family cars or an SUV.

When the Cygnet 20’s mast is lowered it pivots in the tabernacle, along with the boom, gaff, and both sails, which remain attached, and it is supported on a removable timber boom crutch at the stern. The rig is raised and lowered complete—the sails are bent on, the gaff and boom are attached to the mast, and the furled jib is left in place on the forestay. To rig the boat is straightforward, even for a singlehander: insert the two drain bungs, remove the trailer straps, remove and roll-up the one-piece sail cover, attach the Windex vane to the masthead, loosen all lines and remove any ties, and raise the mast while hauling in the forestay, which is led through a sheave at the end of the bowsprit then back to the cockpit. After the mast comes to a stop—fully upright in the tabernacle—the person doing the hauling walks forward to tie the forestay off at a bow-mounted cleat. Finally, a stainless-steel locking pin is inserted through the tabernacle and mast.

All that remains to be done is to raise the topping lift to free the boom crutch so it can be folded and put away, adjust the shroud tension (if necessary), tidy all lines, hang fenders, give one final check all around, and then launch the boat off the trailer. From start to finish, the boat can be rigged and launched within 30 minutes.

Thanks to the hull profile, the Cygnet 20 can stand upright when dried out. The forefoot is deep and flows into a wide, flat keel plank. With the engine, rudder, and centerboard raised you can run the boat up onto a sandy beach, drop the sand anchor, and camp overnight.

T he cockpit features two lazarettes, a deep coaming for good back support and a dry ride in a strong wind, and a nonskid surface throughout that offers surprisingly comfortable seating even without cushions. There is no mainsheet traveler; instead, the mainsheet is led through a 4:1 block-and-tackle system anchored in the center of the cockpit sole. As a result, the cockpit feels uncluttered and spacious and has ample seating for four adults. The starboard lazarette houses the fuel tank for the outboard motor as well as access for the fuel line. The port lazarette houses a hand-operated bilge pump, which is also used to empty the two internal water-ballast tanks, one located beneath (and across) the two quarter berths and the other tank beneath (and across) the cockpit sole aft of the centerboard. Each has a capacity of 63-1⁄2 U.S. gallons, and water is let in via a bronze through-hull and stainless-steel valves. The rear tank, subject to sailing conditions and preferences, can be isolated and not filled; filling the forward tank is a prerequisite before setting off. I found that on light wind days, with four adults on board, the Cygnet was well-balanced with only the forward ballast tank filled to capacity.

The two quarter berths are each more than 6′ in length making them suitable for taller crewmembers. The optional folding table sits above the centerboard trunk and provides a useful work surface even when folded away; when extended it is large enough for four people to dine in comfort.

Emptying the tanks requires about 100 strokes for the forward tank or about 150 strokes for both tanks. The system offers ballast flexibility: it can be adjusted according to conditions and crew numbers as well as used to reduce the weight for trailering. When filled, the ballast tanks add about 500 lbs to the overall weight.

D own below, the cabin has four berths. The two settee berths are 6′6″ long and ideal for those who are taller than 6′, while the V-berth in the bow is extremely comfortable for those under 6′. A porta-potti stows beneath the V-berth, while in the main cabin area there is a cupboard and sink to port and a cupboard with benchtop to starboard. An (optional) fold-out timber table, fitted over the centerboard case, provides adequate dining space for four. Lockers beneath all the berths—four under the settees and two under the V-berth—provide plenty of easily-accessed storage. The cabin sides and overhead are finished in V-grooved plywood, but other options are available. The companionway washboards are 7⁄16″ opaque acrylic and can be stowed in two purpose-made bags when not in use.

On my boat, auxiliary power is delivered by a Tohatsu 6-hp four-stroke long-shaft outboard mounted directly to the port side of the transom. (Previously a center motorwell for an inboard-outboard motor was offered, but this has been converted to a locker that can be used as an ice box—just add a bag of ice and your favorite drinks.) My motor can power the boat, with bare poles, up to 5 knots with minimal effort. A connecting arm from the outboard to a tiller provides positive control, in forward and reverse, and can be disengaged when sailing; it is part of Cygnet outfitting. The outboard can be raised out of the water when sailing to reduce drag. The tiller is Pacific teak (Vitex), and the fiberglass rudder blade can be pivoted up above the waterline for beaching and trailering.

There is plenty of natural light throughout the cabin, thanks to the portlights, large companionway hatch and, when opened, the lifting coachroof. The forward V-berth conceals a porta-potti and lockers beneath its cushions.

U nder sail, movement around the cockpit is easy and the view forward is rarely obscured by the jib. The running lines, including jibsheets, all three halyards—jib, peak, and throat—and the topping lift are led back to jam cleats on the cabintop, within easy reach of the crew. I have added a Ronstan tiller extension so that I can also reach all the lines when helming, taking just one step forward to trim either sail while maintaining complete control of the rudder.

The Cygnet 20 provides a remarkably stable platform that tracks true and holds its course with a very light touch on the tiller. The pivoting centerboard, raised and lowered on a 10:1-ratio winch, allows the crew to bring the center of gravity aft in stronger winds by raising the board 25%, which in turn improves the windward heading. In approximately 10 knots of breeze, Navionics on the iPhone recorded our speed between 5.4 and 6.0 knots. The boat is exceptionally responsive to the helm and easily picks up speed after tacking. There’s no concern when jibing, as the helmsman can easily swing the main across with the mainsheet directly at hand.

The water ballast allows the boat’s center of gravity to be lowered, making the boat both more stable and more comfortable in stronger winds; the relatively short and light rig also contributes to this stability.

The plumb stem, short bowsprit, high-peaked gaff, tanbark sails, and traditional reefpoints clearly reflect the influence of late-19th and early-20th-century British working boats. Less obvious are the modern rigging details that allow one person to rig, launch, and set sail within 30 minutes.

The mainsail has two rows of reefpoints, and with the roller-furling jib there is a great deal of scope for shortening sail as the need arises. Additionally, the gaff-rigged mainsail can be scandalized: by lowering the peak, the sail is almost entirely depowered, and while this is not a good long-term solution for coping with heavy weather, it is a handy trick if you need to reduce sail area quickly and temporarily. A vang delivers control to the boom.

B eing designed for inland waterways, the Cygnet 20 does have (some) limitations (well, the only one that comes to mind is that I would not be keen to take it to sea, out of sight of land), but that does not preclude sailing in and around bays, coastal islands, and major rivers that open to the ocean. The versatility of the boat for inland sailing is hard to beat. The Cygnet can be fitted for rowing, complete with sliding seat on tracks set into the parallel cockpit benches, and carbon-fiber oars. When combined with the low height of the rig—just 19′ above the cabintop—and the ability to quickly lower the whole rig even when on the water, this rowing option allows the Cygnet 20 to explore many less accessible rivers and streams, even those crossed by fixed bridges.

I continue to enjoy the boat whatever the season, conditions, or locality, whether I’m cruising with my wife and friends, or just out for an enjoyable daysail on my own. At time of writing, I have booked the next sailing trip inter-state to Tasmania, taking full advantage of having a trailer-sailer that can be ferried overnight (approximately 245 nautical miles). Once in Tasmania, I will be faced with the difficult decision of choosing the first sailing destination from my wish list of about 50 lakes, rivers, bays, and coastal islands.

Jan Stephen Kent is the eldest of three children of Polish migrants who arrived in Australia in the early 1950s. Born and raised in Hobart, Tasmania, his love for the ocean came when he began surfing when he was 14 and has remained with him. He has surfed Peru, Portugal, South Africa, and most of Australia. He has five adult children and three grandchildren. He and his wife have traveled to Peru, Chile, Argentina, southern Africa countries, most of Europe and parts of Asia, and have sailed off Croatia and Sardinia. Set to retire late in 2023, he is still surfing, and messing around in boats has become his passion.

Cygnet Particulars

LOA/19′2-1⁄2″

LWL/17′8-1⁄2″

Beam/7′3-3⁄4″

Draft, centerboard up/ 1′1-1⁄2″

Draft, centerboard down/5′1-3⁄4″

Displacement (loaded)/2,756 lbs

Towing weight (not including trailer)/ 1,764 lbs

Jib/77 sq.ft

Mainsail/176.5 sq.ft

Fuel tank/3 gallons (US)

Fresh-water tank/5 gallons (US)

Required engine size/4hp

The Cygnet 20 is manufactured by Bluewater Cruising Yachts in Cardiff, New South Wales, Australia. The listed price is $72,600 AUS plus GST.

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One thought on “ Cygnet 20 ”

I really like this design and the size is my favorite, easy to trailer and launch, and keep at home and visit many different places. I’m not a fan of the sliding Gunter mainsail rigging, and would consider changing that with recommendations from the designer.

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• Thread starter fido
• Start date Mar 1, 2010
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• Trailer Sailors

hello everyone I am looking for the proper luff leech and foot measurements for sails for the cygnus 20 can some one help me thx steve  

I have never heard of a Cygnus 20, but I'll bet your sail maker has. Plus, I'll bet they have the dimensions.  

fido said: hello everyone I am looking for the proper luff leech and foot measurements for sails for the cygnus 20 can some one help me thx steve Click to expand

of course, there is nothing guaranteeing that the boat hasn't been modified at some point. Getting a sail made to the specifications is a bit risky unless you know the boat is completely stock. I'd also point out that some boats have had rig changes during the course of their manufacturing run, so the "stock" specifications will have changed depending on when the boat was made.  

thanks found sails at second hand sails all new for $600  

Hi - just picked up a Hinterhoeller Cygnus 20 and wondering if anyone might have a mast for it or a mast for a 20' sailboat - it's the centreboard version and displaces just 600 lbs - thanks for any suggestions! Tom  

Sails If your looking for sails for a Cygnus , a Sharks mainsail will fit it almost perfectly. It is about 1" shorter on the foot. Lots of used Shark sails available. The Jib is about 9 " to long, but could be trimmed for about $150. Thanks  

Hi, Was wondering if anyone might know the length of the spar in a Cygnus 20. I have a decent mast which is about a foot short and plan to use aluminum tubing at the foot to bring it up spec. Thanks Tom  

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• Boat REF#  ·  133476
• Length  ·  20'0"
• Year  ·  1990
• Construction  ·  GRP
• Underwater profile  ·  Full-Displacement
• Engine  ·  1 x diesel 21hp, Yanmar 3GM (2010)
• Lying  ·  Falmouth

Boatshed Cornwall

This boat is off the market but here are some boats that are still for sale.

• Specification
• Additional Information

Extra Details

rigged Wood spars ()

Construction

Accommodation.

1 anchors (folding) 40'0" of rode

Nav Equipment

Safety equipment.

2 bilge pumps (1 manual / 1 electric)

Broker's Comments

These Cygnus boats are over engineered vessels, properly made for small scale commercial fishing and so most have had a pretty hard life, which is what they were designed for.

This particular one has had a somewhat easier time of it, as she has been used as a tourist mackerel fishing boat down here in Cornwall.

The boat is being sold as the owner needs a larger boat not due to the size of the fish but the numbers of tourists and as the boat has been used in this fashion, she has been subject to yearly inspections for council coding and consequently has been maintained to a very high level.

New engine went in last year at great expense and she has been surveyed this year with no issues so this represents great value.

These boat details are subject to contract. Note: Offers on the asking price may be considered.

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Used Cygnus Marine 21 Fishing boat with Beta 35 Diesel

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I would like to thank you for the service you gave in selling my 6.5 metre RIB. Once it was in your possession there was nothing more for me to do, you dealt with the valeting and small repairs required, I was impressed that you were able to sell it in February, I did not think you would have any interest until the spring! The next time I want to buy or sell a RIB there is only one place I will go.

Robert Eggelton, West Sussex

Trafalgar Wharf Hamilton Road Portsmouth Hampshire, PO6 4PX United Kingdom

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HOLD ON! - have you seen our BUYERS GUIDE

2019 Bluewater Cruising Yachts Cygnet 20

Hr 20 cygnus

The hr 20 cygnus is a 20.0ft fractional sloop designed by george hinterhoeller and built in fiberglass since 1963..

The Hr 20 cygnus is an ultralight sailboat which is a very high performer. It is stable / stiff and has a low righting capability if capsized. It is best suited as a racing boat.

Hr 20 cygnus for sale elsewhere on the web:

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• Sailboat Guide

Cygnus 20 FK

Cygnus 20 FK is a 20 ′ 0 ″ / 6.1 m monohull sailboat designed by George Hinterhoeller and built by Hinterholler Ltd. /Skene Boats Ltd. (CAN) starting in 1965.

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)

This from CYGNUS owner ‘barklakemike’: “George Hinterhoeller in Niagara actually designed and built the first the HR 20 as he called it, in 1963…. A class association formed in 1965 or 66 and the boat was renamed the Cygnus class. The tooling was sold to Skene in Ottawa, (who also made Albacores); when Hinterhoeller became one of three boatbuilders (including Morch in Belleville and Bruckmann in Oakville) who combined forces to make up the manufacturing side of the new C and C yachts. …the Cygnus was available with either a fixed cast iron keel and 2 ft 9 in draft, or with a fully retracting steel centerboard, when it weighed only 600 lbs.”

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Design Details

Cygnus gm21.

The boats that we produced were all bespoke, crafted to customer specifications so you may find many variations on this core product out there that are unique in their own way.

Boat Descritption

Cygnus Marine, Britain’s leading GRP fishing and workboat builders, first introduced this design in 1977, and since that date the CYGNUS GM21 has become the accepted standard for inshore fishing vessels, with over 300 craft being constructed. She is a sea-friendly, round bilge, stable, easily driven hull with a range of layouts to suit most applications and the capability of a sealed self draining deck. The craft is available to any stage of construction from bare hull shell to a fully finished to owners specification.

• Stable multi purpose punt
• hardwood bilge keels
• moulded cuddy
• Perfect for inshore applications
• Quality build
• diverse applications

Product Gallery

GM21 Lines Plan and Specification

Some Diagrams are not to scale. All craft are custom built and may not match diagram above

Dimensions in FT and Inches

This Cygnus boat is available from 

Mr Peter Meredith Blackbird Cottage. (Office.) High Street Saul Gloucester GL27JB

07725741987 01452741298

[email protected]

The Cygnus GM21 is a sturdy inshore fishing vessel and work boat, suitable of single handed working and all year round use.

The design features include a high upright stern with a fine waterline entry, full round low bilges, full displacement long keel and transom stern. This combination produces a stable and seaworthy hull of exceptional quality. Working off a beach is easily done.

This vessel has become the accepted standard for many in shore fishing boats, with 30 years of production it is a very sea friendly vessel. A moulded cuddy can be built from maintenance free GRP or more traditional hardwood.

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• April 23, 2020
• One Comment

One reply on “Cygnus GM21”

Hello How thick is the transom on a Cygnus 21 Thanks Dan

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All vessel are offered "as is where is" and in good faith but without any guarantees.

Cygnus cyclone 30 patrol boat – reduced to £125,000.

Boat Sector

Boat description, 9.10 x 3.35 x 1m draft, gbp plus vat, year of build, hull material, twin outdrives, build class, please call, maximum speed, 2 x volvo penta 260hp engines, accomodation, 3 beds with storage underneath, condition / comments, both new engines replaced at a cost of gbp£60,000.