Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 42.65 ft
LWL: 32.50 ft
S.A. (reported): 832.00 ft²
Beam: 11.50 ft
Displacement: 20,000.00 lb
Ballast: 8,000.00 lb
Max Draft: 6.50 ft
Construction: FG
Ballast Type: Lead
First Built: 1971
Last Built: 1972
# Built: 14
Builder: Jensen Marine (USA)
Designer: C. William Lapworth

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Universal
Type: Gas
Fuel: 40 gals


Water: 70 gals

Sailboat Calculations

S.A. / Displ.: 18.14
Bal. / Displ.: 40.00
Disp: / Len: 260.09
Comfort Ratio: 33.62
Capsize Screening Formula: 1.70
S#: 2.18
Hull Speed: 7.64 kn
Pounds/Inch Immersion: 1,335.45 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 52.00 ft
J: 17.16 ft
P: 45.42 ft
E: 17.00 ft
S.A. Fore: 446.16 ft²
S.A. Main: 386.07 ft²
S.A. Total (100% Fore + Main Triangles): 832.23 ft²
S.A./Displ. (calc.): 18.14
Est. Forestay Length: 54.76 ft

Sailboat Links

Designers: C. William Lapworth
Builders: Jensen Marine/Cal Boats
Download Boat Record:


A relatively rare Cal model that was in production for less than a year.
Diesel available as an option.