A twin-keel masthead sloop designed for shoal-water exploration, also available in a deeper standard-keel configuration
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 2.29 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 998 kg of hull, so roughly 1,600 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 998 kg of hull, with a keel that raises or a draught shallow enough to float off a trailer — she can go back on the trailer at the ramp, not only into the water.Shoal draughtDraws 0.76 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 13 — a quick, lively motion that feels every wave.
Comfort ratio 13
CoastalBluewater
At 2.31 she sits above the 2.0 line — beamy for her weight, and happiest coastal.
Capsize screening 2.31
LightHeavy
200 — moderately heavy for her waterline, a balanced cruising weight.
Displacement / length 200
EasygoingPowered-up
16.1 — moderate power for her weight; steady, all-round performance.
Sail area / displacement 16.1
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 ~82% of boats her size on file
Compared with 514 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
16.1
Displacement / length
199.9
Comfort ratio
13.0
Capsize screening
2.31
Hull speed
5.5 kn
Pounds / inch immersion
456
Hull
Hull type
Twin Keel
Construction
Fiberglass
Production
Years built
First built 1970
Designer
Thames Structural Plastics
Builder
Thames Marine
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.
Bavaria Yachts 6066.50 mSame hull family0.5 m longerA lightweight 6.5-metre fractional sloop with a high sail-area-to-displacement ratio for spirited coastal sailing
Halcyon 236.93 mSame hull family0.9 m longerA triple-keeled masthead sloop by Alan H. Buchanan, offering shallow-draft versatility based on the earlier Crystal 23
Marieholm Boats S-206.00 mSame hull familyNear-identical lengthA short-run 1970s fractional sloop with a fin keel and transom-hung rudder, designed for coastal agility
J Boats Tillotson Pearson J/247.32 mSame hull family1.3 m longerA legendary Rodney Johnstone design that defined the modern one-design racer with its high sail-area-to-displacement ratio
J J/77.04 mSame hull family1.0 m longerA 2024 fractional sloop with a shallow 1.16m draft and a high 23.55 sail-area-to-displacement ratio for responsive daysailing
Avance Yachts 2457.48 mSame hull family1.5 m longerA Peter Norlin-designed fractional sloop with a high ballast ratio for her size, built for stability and performance
