Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Fractional Sloop
LOA: 30.83 ft
LWL: 25.92 ft
S.A. (reported): 462.00 ft²
Beam: 9.83 ft
Displacement: 8,288.00 lb
Ballast: 3,360.00 lb
Max Draft: 5.42 ft
Construction: FG
First Built: 1983
Last Built: 1988
# Built: 100
Builder: Börjesson Brothers (SWE)
Designer: Rolf Magnusson

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Volvo
Model: KGM-S2B
Type: Diesel
HP: 18
Fuel: 15 gals


Water: 20 gals

Sailboat Calculations

S.A. / Displ.: 18.11
Bal. / Displ.: 40.54
Disp: / Len: 212.47
Comfort Ratio: 22.27
Capsize Screening Formula: 1.95
Hull Speed: 6.82 kn
Pounds/Inch Immersion: 910.41 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Sailboat Links

Designers: Rolf Magnusson
Builders: Börjesson Brothers
Associations: Scanmar Yacht Owners
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The SCANMAR 31A replaced the 31 in 1985. The difference between the two models is the interior arrangement: the 31A has a real aft cabin with a folding door between the aft cabin and salon, and two fixed ports set into the hull. The 31 has instead a wide quarterberth which is accessed aft of the galley. Also, the 31A has two straight settees in the salon, whereas the 31 has a L-shaped settee to port opposite a straight settee to starboard.