Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 8.00 m
LWL: 6.27 m
S.A. (reported): 25.46 m²
Beam: 2.44 m
Displacement: 2,000 kg
Ballast: 862 kg
Max Draft: 1.50 m
Construction: FG
First Built: 1976
# Built: 180
Builder: Trapper Yachts Ltd. (UK)
Designer: Bruce Kirby

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Yanmar
Model: YSE8
Type: Diesel

Sailboat Calculations

S.A. / Displ.: 16.35
Bal. / Displ.: 43.08
Disp: / Len: 225.87
Comfort Ratio: 19.16
Capsize Screening Formula: 1.95
S#: 2.34
Hull Speed: 6.08 kn
Pounds/Inch Immersion: 588.28 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 9.88 m
J: 3.05 m
P: 8.46 m
E: 2.45 m
S.A. Fore: 15.06 m²
S.A. Main: 10.35 m²
S.A. Total (100% Fore + Main Triangles): 25.41 m²
S.A./Displ. (calc.): 16.32
Est. Forestay Length: 10.34 m

Sailboat Links

Designers: Bruce Kirby
Builders: Anstey Yachts Ltd. (UK)
Trapper Yachts (UK)
Associations: Quarter Ton Class
Trapper 300
Download Boat Record:


Prototype built for the 1/4 ton World Championships at Deauville in 1975 ('Fred Junior'. 3 others, also of wood, ended up competing the following year.).
Around 180 Trapper 300''s of two interior versions were constructed, many being completed from kits. A considerable portion of these were sold in Poland, but some also went to USA and Hong Kong.
Keels were originally available in lead or cast iron, the majority being the cast iron version. A number were later modified with a bulb on the bottom of the keel.
Many different engines were fitted, although the most common, fitted by Trapper Yachts, was the Yanmar YSE8.