Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Fractional Sloop
LOA: 31.10 ft / 9.48 m
LWL: 23.70 ft / 7.22 m
S.A. (reported): 445.00 ft² / 41.34 m²
Beam: 10.20 ft / 3.11 m
Displacement: 6,000.00 lb / 2,722 kg
Max Draft: 5.20 ft / 1.58 m
Construction: FG
Ballast Type: Iron
First Built: 1980
Builder: Trapper Yachts. Ltd. (UK)
Designer: Robert Humphries

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Sailboat Calculations

S.A. / Displ.: 21.63
Disp: / Len: 201.21
Comfort Ratio: 16.22
Capsize Screening Formula: 2.25
Hull Speed: 6.52 kn
Pounds/Inch Immersion: 863.76 pounds/inch

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2 nd ad half width

3rd ad full width

Sailboat Links

Designers: Rob Humphreys
Builders: Anstey Yachts Ltd. (UK)
Trapper Yachts (UK)
Associations: Half Ton Class
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IOR 1/2 ton. Prototype was 'Roller Coaster', runner up at the 1979? Half Ton Cup. The first production version was the MISTRAL 31, built by Fiarey Allday Ltd. (UK). Trapper Yachts later acquired the molds though only a handful were built. Of these were a few 'GP' models built with more exotic materials and lead ballast.