BoatsTriangle 20

Triangle 20

Fractional Sloop · Keel/centreboard · 1961–1963

A scaled-down derivative of the Amphibi-Con, designed by Charles Angle for easy towing behind period passenger cars

Designed by Charles Angle.

LOA
Beam
Draft (max)
Displacement
Hull type
Keel/Cbrd.

Is it for you?

Character

Where this design lands on the numbers a shopper trusts — read straight from her own ratios.

TrailerableBeam 2.16 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,043 kg of hull, so roughly 1,650 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 1,043 kg of hull, with a keel that raises or a draft shallow enough to float off a trailer — she can go back on the trailer at the ramp, not only into the water.Shoal draftDraws 0.66 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her moderate displacement on a moderate beam gives 15 — a quick, lively motion that feels every wave.

Comfort ratio 15
CoastalBluewater

2.15 — right around the 2.0 line, the edge between coastal and offshore.

Capsize screening 2.15
LightHeavy

222 — moderately heavy for her waterline, a balanced cruising weight.

Displacement / length 222
EasygoingPowered-up

18.9 — plenty of sail for her weight; lively and quick to respond.

Sail area / displacement 18.9

Powered-up and quick to accelerate — this one likes to sail.

  • Narrower than ~75% of boats her size on file

Compared with 557 boats of the same type within a quarter of her length.

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
18.9
Displacement / length
221.7
Comfort ratio
14.7
Capsize screening
2.15
Hull speed
5.5 kn
Pounds / inch immersion
422
Hull
Hull type
Keel/Cbrd.
Construction
Fiberglass
Production
Years built
1961–1963
Units built
75
Designer
Charles Angle
Builder
Triangle Marine Co, Grampian Marine Ltd

Boats like this, on the water

Nobody has filmed this one — but these are close.

Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.

Marshall Marine Corporation Sanderling5.54 mSame hull family0.7 m shorterA gaff-rigged catboat based on a 1941 design, featuring a shallow-draft keel-centerboard hull for versatile day sailing
EP#370 Buying and Selling Boats with Chelle25:14from Sailing Into Oblivion
Chrysler Marine 226.71 mSame hull family0.5 m longerA 6.7-metre masthead sloop produced as the C-22 and T-22 Sandpiper, featuring a swing keel for shallow-water access
Become a Successful Sailing Youtuber - ep 338 - Lady K Sailingfrom Lady K Sailing
RS 216.40 mSame hull family0.2 m longer
Training Sea Cadet Instructors | RS21 Keelboat Sailing – Welsh Harp1:37from City Sailing
Catalina Yachts 227.26 mSame hull family1.0 m longerA swing-keel masthead sloop with 15,000 units sold, offering a highly versatile and trailerable coastal cruiser
The ZERO KEEL and ALPHA RUDDER - Are Kraken Yachts Really THAT GOOD?9:27from Practical Sailor
O'day 23-26.93 mSame hull family0.7 m longerA masthead keel-centerboard sloop produced in Brazil and the U.S. for over a decade as a popular coastal cruiser
Juliano and the sailboat Tupã12:35from Podcast Maré Sonora ®
Cal Boats 247.43 mSame hull family1.2 m longerThe inaugural Jensen Marine Cal model, this fractional keel-centerboard sloop was built for shoal-water versatility
Aladino Sails The Pacific Alone.2:08from Sailing Magic Carpet

The family

Related models

The designs closest to hers — usually the rest of the builder's range, sometimes the same hull sold under another name.

Tripp 26A high-performance fractional sloop by Bill Tripp featuring a lifting keel and a high sail-area-to-displacement ratio

Keep looking

Nothing filmed of this one yet

Two ways to keep looking — both search what the fleet has actually recorded.

Search the fleet for boats like thisAsk the fleet about the Triangle 20

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