Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 30.68 ft
LWL: 26.25 ft
S.A. (reported): 380.00 ft²
Beam: 10.07 ft
Displacement: 7,716.00 lb
Ballast: 3,527.00 lb
Max Draft: 5.41 ft
Construction: FG foam sandwich deck
First Built: 1983
Last Built: 1986
Builder: Mamba Boats
Designer: Bengt Karlsson

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Yanmar
Model: 2GM
Type: Diesel
Fuel: 11 gals


Water: 53 gals

Sailboat Calculations

S.A. / Displ.: 15.62
Bal. / Displ.: 45.71
Disp: / Len: 190.44
Comfort Ratio: 19.95
Capsize Screening Formula: 2.04
Hull Speed: 6.87 kn
Pounds/Inch Immersion: 944.51 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Sailboat Links

Designers: Bengt Karlsson
Builders: BK Marin AB
Mamba Boats (SWE)
Download Boat Record:


successor to the Mamba 31.
Delivered with masthead or fractional rig.