BoatsWesterly Marine Ltd. Warwick 21

Westerly Marine Ltd. Warwick 21

Masthead Sloop · Twin keels · 1970–1976

A twin-keeled masthead sloop with a 0.84m draft, designed by Laurent Giles for stable, shoal-water coastal cruising

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.

TrailerableBeam 2.36 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,676 kg of hull, so roughly 2,300 kg on a trailer: check that against your own towing rating.Shoal draughtDraws 0.84 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 beamy beam gives 19 — a quick, lively motion that feels every wave.

Comfort ratio 19
CoastalBluewater

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

Capsize screening 2.01
LightHeavy

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

Displacement / length 250
EasygoingPowered-up

13.9 — modest power for her weight; easygoing rather than lively, and happier with a breeze.

Sail area / displacement 13.9
TenderStiff

45% of her weight is ballast — stiff, standing up well to her sails.

Ballast 45%

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

  • Draws less than ~85% of boats her size on file

Compared with 833 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
45.5%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
13.9
Displacement / length
250.2
Comfort ratio
19.1
Capsize screening
2.01
Hull speed
5.8 kn
Pounds / inch immersion
519
Hull
Hull type
Twin Keel
Construction
Fiberglass
Ballast type
Iron
Production
Years built
1970–1976
Units built
207
Designer
Laurent Giles, 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.

Comet 7707.70 mSame hull family1.2 m longerA Jean-Marie Finot-designed IOR quarter-tonner with a high sail-area-to-displacement ratio for spirited club racing
Cal 257.62 mSame hull family1.1 m longerA flush-deck masthead sloop featuring a pop-top companionway that became one of the most popular models in the fleet
Marieholm Boats S-206.00 mSame hull family0.6 m shorterA short-run 1970s fractional sloop with a fin keel and transom-hung rudder, designed for coastal agility
Halcyon 236.93 mSame hull family0.4 m longerA triple-keeled masthead sloop by Alan H. Buchanan, offering shallow-draft versatility based on the earlier Crystal 23
Jeanneau Sun Odyssey 24.27.30 mSame hull family0.8 m longerA Jacques Fauroux-designed fractional sloop built for coastal cruising with a stable fin-and-bulb keel
Dehler Yachts 25CR7.50 mSame hull family1.0 m longerA Van de Stadt-designed fractional sloop with a high sail area-to-displacement ratio built for spirited performance

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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