Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 31.17 ft
LWL: 23.95 ft
S.A. (reported): 389.00 ft²
Beam: 9.71 ft
Displacement: 9,800.00 lb
Ballast: 3,638.00 lb
Max Draft: 6.10 ft
Construction: FG
First Built: 1970
Builder: Alpa (ITA)
Designer: Alpa

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Farymann
Type: Diesel
HP: 28
Fuel: 26 gals


Water: 53 gals

Sailboat Calculations

S.A. / Displ.: 13.64
Bal. / Displ.: 37.12
Disp: / Len: 318.46
Comfort Ratio: 28.08
Capsize Screening Formula: 1.82
S#: 1.36
Hull Speed: 6.56 kn
Pounds/Inch Immersion: 830.94 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 37.99 ft
J: 12.23 ft
P: 32.80 ft
E: 9.54 ft
S.A. Fore: 232.31 ft²
S.A. Main: 156.46 ft²
S.A. Total (100% Fore + Main Triangles): 388.77 ft²
S.A./Displ. (calc.): 13.63
Est. Forestay Length: 39.91 ft

Sailboat Links

Builders: Alpa Yachts (ITA)
Download Boat Record:


Thanks to 'rmanganaro' for providing important corrections.
Sometimes attributed to S&S but actually designed 'in house'.