BoatsTriangle One-Design

Triangle One-Design

Fractional Sloop · Fin Keel · 1926–1933

A high-performance John G. Alden fractional sloop designed in 1926, featuring a stiff fin keel and classic racing lines

Designed by John G. Alden, built by James Graves.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin Keel

Is it for you?

Character

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

LivelySea-kindly

Her heavy displacement on a narrow beam gives 25 — a moderate, middle-of-the-road motion.

Comfort ratio 25
CoastalBluewater

1.75 — just under the 2.0 offshore line; her beam is modest for her weight.

Capsize screening 1.75
LightHeavy

354 — very heavy for her waterline, a serious load-carrying cruiser.

Displacement / length 354
EasygoingPowered-up

24.9 — a lot of sail for her weight; powered-up and eager, a real performer.

Sail area / displacement 24.9
TenderStiff

50% of her weight is ballast — stiff, standing up well to her sails.

Ballast 50%

Built heavy and sea-kindly — a boat made to cross oceans and forgive a rough night.

  • Narrower than ~95% of boats her size on file

Compared with 2223 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
Ballast / displacement
49.8%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
24.9
Displacement / length
353.7
Comfort ratio
24.6
Capsize screening
1.75
Hull speed
5.8 kn
Pounds / inch immersion
496
Hull
Hull type
Fin Keel
Construction
Wood
Ballast type
Lead
Production
Years built
1926–1933
Units built
60
Designer
John G. Alden
Builder
James Graves, Graves Yacht Yard

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.

Com-Pac Yachts 258.59 mSame hull familyNear-identical lengthOriginally the Watkins 25, this masthead sloop features a shallow 0.76m draft and a fin keel for versatile cruising
Ericson Yachts 298.71 mSame hull familyNear-identical lengthA 1970s masthead sloop with a 1.32-meter draft and a 45% ballast ratio, balancing coastal stability with shoal access
Albin Marine AB Vega 278.25 mSame hull family0.4 m shorterScandinavia's most popular production yacht of her size, this 8.25-metre masthead sloop defined coastal cruising from 1965 to 1979
Shannon Yachts 288.53 mSame hull family0.2 m shorterA fin-keeled cutter with a transom-hung rudder, built for coastal cruising with a stiff 38% ballast ratio
San Juan 288.74 mSame hull familyNear-identical lengthA 1977 masthead sloop with a 50% ballast ratio and fin keel, designed for balanced performance in a compact 28-foot hull
Jeanneau Aquila 278.70 mSame hull familyNear-identical lengthA Philippe H. Harle-designed masthead sloop offered in both standard and deep-keel Regatta configurations

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.

Keep looking

Nothing filmed of this one yet

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