BoatsWesterly Marine Ltd. Gk 29

Westerly Marine Ltd. Gk 29

Fractional Sloop · Fin w/transom Hung Rudder · 1978–1981

A former IOR half-tonner with a 50% ballast ratio, built for competitive racing performance

Designed by Mike Pocock & 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 light displacement on a beamy beam gives 15 — a quick, lively motion that feels every wave.

Comfort ratio 15
CoastalBluewater

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

Capsize screening 2.28
LightHeavy

128 — light for her waterline, so she is easily driven and quick to accelerate.

Displacement / length 128
TenderStiff

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

Ballast 50%

Light and lively — happiest day-sailing and coastal-hopping in settled weather.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
50.0%
Rig & sail area
Rig
Fractional Sloop
Ratios
Displacement / length
127.7
Comfort ratio
14.8
Capsize screening
2.28
Hull speed
7.0 kn
Pounds / inch immersion
1018
Hull
Hull type
Fin w/transom hung rudder
Construction
Fiberglass
Ballast type
Iron
Production
Years built
1978–1981
Units built
182
Designer
Mike Pocock, 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.

Pogo 8.508.50 mSame hull family0.3 m shorterA high-performance fractional sloop by Pierre Rolland featuring a wide beam and dual rudders for rapid offshore sailing
Beneteau First 3009.05 mSame hull family0.2 m longerA Groupe Finot-designed fractional sloop with a high sail-area-to-displacement ratio built for spirited club racing
RM Yachts 8908.90 mSame hull familyNear-identical lengthA high-performance fractional sloop with a deep bulb keel and dual rudders, optimized for speed and stability
Jeanneau Rush 319.13 mSame hull family0.3 m longerA Ron Holland-designed IOR half-tonner that served as the official boat for the Tour de France à la Voile
Jeanneau Aquila 278.70 mSame hull familyNear-identical lengthA Philippe H. Harle-designed masthead sloop offered in both standard and deep-keel Regatta configurations
Bristol Yachts 288.53 mSame hull family0.3 m shorterAn IOR Half Ton racer with reduced stern overhang, serving as the performance-oriented predecessor to the Bristol 29.9

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.

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