Masthead Sloop · Fin w/transom Hung Rudder · First built 1979
An Arthur S. Henry-designed masthead sloop with a shallow 0.66m draft, built for shoal-water cruising since 1979
Designed by Arthur S. Henry.
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.
TrailerableBeam 2.39 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,134 kg of hull, so roughly 1,750 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 1,134 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 0.66 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
202 — moderately heavy for her waterline, a balanced cruising weight.
Displacement / length 202
EasygoingPowered-up
17.1 — moderate power for her weight; steady, all-round performance.
Sail area / displacement 17.1
TenderStiff
36% of her weight is ballast — moderately stiff, a middle-of-the-road stability.
Ballast 36%
A balanced, easily-driven cruiser — comfortable and forgiving for coastal work.
Draws less than ~94% of boats her size on file
Compared with 665 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
36.0%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
17.1
Displacement / length
202.3
Comfort ratio
13.4
Capsize screening
2.31
Hull speed
5.6 kn
Pounds / inch immersion
494
Hull
Hull type
Fin w/transom hung rudder
Construction
Fiberglass
Production
Years built
First built 1979
Designer
Arthur S. Henry
Builder
American Mariner Industries
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.
Halcyon 236.93 mSame hull family0.6 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 family0.3 m shorterA short-run 1970s fractional sloop with a fin keel and transom-hung rudder, designed for coastal agility
Bavaria Yachts 6066.50 mSame hull family0.2 m longerA lightweight 6.5-metre fractional sloop with a high sail-area-to-displacement ratio for spirited coastal sailing
J Boats Tillotson Pearson J/247.32 mSame hull family1.0 m longerA legendary Rodney Johnstone design that defined the modern one-design racer with its high sail-area-to-displacement ratio
Cal 257.62 mSame hull family1.3 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 family1.4 m longerA Jean-Marie Finot-designed IOR quarter-tonner with a high sail-area-to-displacement ratio for spirited club racing
