Fractional Sloop · Centerboard Dinghy · First built 1952
A 1952 centerboard dinghy with a hull derived from the International 14, offering a versatile sloop or cat rig
Designed by Howard Siddons & Uffa Fox, built by Siddons.
LOA
Beam
Draft (max)
Displacement
Hull type
Centerboard Dinghy
Is it for you?
Character
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
TrailerableBeam 1.42 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 129 kg of hull, so roughly 750 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 129 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 0.10 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly
Her light displacement on a moderate beam gives 4 — a quick, lively motion that feels every wave.
Comfort ratio 4
CoastalBluewater
At 2.84 she sits above the 2.0 line — beamy for her weight, and happiest coastal.
Capsize screening 2.84
LightHeavy
47 — light for her waterline, so she is easily driven and quick to accelerate.
Displacement / length 47
EasygoingPowered-up
41.8 — a lot of sail for her weight; powered-up and eager, a real performer.
Sail area / displacement 41.8
Light and lively — happiest day-sailing and coastal-hopping in settled weather.
Draws more than ~90% of boats her size on file
Narrower than ~82% of boats her size on file
Compared with 373 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
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
41.8
Displacement / length
47.2
Comfort ratio
4.0
Capsize screening
2.84
Hull speed
5.0 kn
Pounds / inch immersion
232
Hull
Hull type
Centerboard Dinghy
Construction
Wood
Production
Years built
First built 1952
Units built
1000
Designer
Howard Siddons, Uffa Fox
Builder
Siddons, Sindle, Allen Boat Co
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.
LaserPerformance 49er4.88 mSame hull family0.6 m longerAn Olympic-class high-performance skiff featuring a massive sail-area-to-displacement ratio for elite racing
MacKay Boats Ltd. 49erfx4.88 mSame hull family0.6 m longerA high-performance Olympic skiff featuring the 49er hull paired with a specialised rig tailored for lighter crews
Lido 144.27 mSame hull familyNear-identical lengthA fractional sloop dinghy designed by Barney Lehman, updated in 1995 with a modern mold for improved longevity and safety
Spindrift 134.06 mSame hull family0.2 m shorterA Hubert Vandestadt-designed centerboard dinghy with a high sail-area-to-displacement ratio for lively, responsive sailing
Several Under License 29er4.40 mSame hull familyNear-identical lengthA high-performance skiff designed by Julian Bethwaite, featuring a powerful fractional rig for competitive racing
Small Craft Ltd. Wayfarer4.82 mSame hull family0.5 m longerAn Ian Proctor-designed centreboard dinghy with a high sail-to-displacement ratio, built since 1957 in wood and fibreglass
