BoatsWesterly Marine Ltd. Gk 24

Westerly Marine Ltd. Gk 24

Masthead Sloop · Fin w/transom Hung Rudder · 1976–1981

A quarter-tonner built for IOR racing, featuring a fin keel and transom-hung rudder for responsive handling

Designed by Laurent Giles, Chris Hawkins & Jack Laurent Giles.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin w/transom Hung Rudder

Is it for you?

Character

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

LivelySea-kindly

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

Comfort ratio 15
CoastalBluewater

At 2.33 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 2.33
LightHeavy

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

Displacement / length 244
EasygoingPowered-up

16.3 — moderate power for her weight; steady, all-round performance.

Sail area / displacement 16.3
TenderStiff

34% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 34%

A balanced, easily-driven cruiser — comfortable and forgiving for coastal work.

  • Draws more than ~75% of boats her size on file

Compared with 1387 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
34.1%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.3
Displacement / length
243.8
Comfort ratio
15.5
Capsize screening
2.33
Hull speed
5.9 kn
Pounds / inch immersion
653
Hull
Hull type
Fin w/transom hung rudder
Construction
Fiberglass
Production
Years built
1976–1981
Units built
320
Designer
Laurent Giles, Chris Hawkins, Jack Laurent Giles
Builder
Westerly 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.

Hunter Marine 257.62 mSame hull family0.3 m longerThe first sailboat built by Hunter Marine, this masthead sloop features a skeg-mounted rudder for stable cruising
Cal 257.62 mSame hull family0.3 m longerA flush-deck masthead sloop featuring a pop-top companionway that became one of the most popular models in the fleet
Comet 7707.70 mSame hull family0.4 m longerA Jean-Marie Finot-designed IOR quarter-tonner with a high sail-area-to-displacement ratio for spirited club racing
Puma 277.95 mSame hull family0.6 m longerA Ron Holland-designed masthead sloop with a fin keel and spade rudder, built for performance-oriented coastal cruising
Jeanneau Sun Odyssey 24.27.30 mSame hull familyNear-identical lengthA Jacques Fauroux-designed fractional sloop built for coastal cruising with a stable fin-and-bulb keel
Martinique 257.70 mSame hull family0.4 m longerA Brazilian-built masthead sloop with a 44% ballast ratio, offering a stiff and stable platform for coastal cruising

The family

Boats like this

Nearby designs by size, type, and era — worth a look alongside her.

Keep looking

Nothing filmed of this one yet

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