Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 31.00 ft
LWL: 26.51 ft
S.A. (reported): 387.00 ft²
Beam: 10.33 ft
Displacement: 8,752.00 lb
Ballast: 2,396.00 lb
Max Draft: 4.82 ft
Construction: FG
First Built: 1977
# Built: 55
Builder: Carlisle & Williams (UK)/Rank Marine Int. (UK)
Designer: John Sharp

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Peter
Model: Mini Twin
Type: Diesel
HP: 12
Fuel: 30 gals


Water: 84 gals

Sailboat Calculations

S.A. / Displ.: 14.63
Bal. / Displ.: 27.38
Disp: / Len: 209.72
Comfort Ratio: 21.65
Capsize Screening Formula: 2.01
Hull Speed: 6.90 kn
Pounds/Inch Immersion: 978.49 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Sailboat Links

Designers: John B. Sharp
Download Boat Record:


Plan A has 'pullman' (2 tier) quarter berths aft with starboard-facing chart table.
Plan B has convertible dinette.
Thanks to DOLPHIN 31 owner Ari H. for providing additional information.