A 1966 masthead sloop with a daggerboard, originally sold through mass-market retail catalogues
LOA
Beam
Draft (max)
Displacement
Hull type
Daggerboard
Is it for you?
Character
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
TrailerableBeam 0.99 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 32 kg of hull, so roughly 650 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 32 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 0.05 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 narrow beam gives 2 — a quick, lively motion that feels every wave.
Comfort ratio 2
CoastalBluewater
At 3.15 she sits above the 2.0 line — beamy for her weight, and happiest coastal.
Capsize screening 3.15
LightHeavy
21 — light for her waterline, so she is easily driven and quick to accelerate.
Displacement / length 21
Light and lively — happiest day-sailing and coastal-hopping in settled weather.
Lighter than ~99% of boats her size on file
Draws less than ~98% of boats her size on file
Narrower than ~98% of boats her size on file
Compared with 300 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
Masthead Sloop
Ratios
Displacement / length
20.6
Comfort ratio
1.9
Capsize screening
3.15
Hull speed
4.5 kn
Pounds / inch immersion
134
Hull
Hull type
Daggerboard
Construction
ABS Plastic
Production
Years built
First built 1966
Units built
60000
Builder
Siltronics Inc, Sears, Roebuck, 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.
Topper International Topper3.40 mSame hull family0.3 m shorterAn Ian Proctor-designed polypropylene dinghy featuring an unstayed cat rig and three versatile sail-area configurations
McDougall Waszp3.35 mSame hull family0.3 m shorterA one-design foiling dinghy featuring wings and an unstayed rig, built in the thousands for high-performance racing
Butler Boats Streaker3.88 mSame hull family0.2 m longerA 3.88-metre cat-rigged dinghy featuring a high sail-area-to-displacement ratio and a fibreglass option introduced in 1998
Several Under License 29er4.40 mSame hull family0.7 m longerA high-performance skiff designed by Julian Bethwaite, featuring a powerful fractional rig for competitive racing
Spindrift 134.06 mSame hull family0.4 m longerA Hubert Vandestadt-designed centerboard dinghy with a high sail-area-to-displacement ratio for lively, responsive sailing
Alcort Sunfish4.24 mSame hull family0.6 m longerWith a high sail-area-to-displacement ratio of 47.02, this nimble 4.24-metre dinghy remains a benchmark for simple
