Westerly Marine Ltd. Berwick 31
Masthead Sloop · Twin keels · 1973–1980
A twin-keeled aft-cockpit sloop built on the proven Longbow hull, optimized for stable coastal cruising in shoal water
Designed by Laurent Giles & Jack Laurent Giles.
- LOA
- Beam
- Draft (max)
- Displacement
- Ballast
- Hull type
- Twin Keel
Is it for you?
Character
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
Her heavy displacement on a moderate beam gives 28 — a moderate, middle-of-the-road motion.
1.78 — just under the 2.0 offshore line; her beam is modest for her weight.
280 — heavy for her waterline, built to carry stores and ride steadily.
14.9 — modest power for her weight; easygoing rather than lively, and happier with a breeze.
45% of her weight is ballast — stiff, standing up well to her sails.
A capable cruiser that sits just inside the offshore line — coastal work with real passages in her.
- Draws less than ~94% of boats her size on file
Compared with 2631 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.
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.
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
Two ways to keep looking — both search what the fleet has actually recorded.
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