Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 10.13 m
LWL: 7.92 m
S.A. (reported): 44.50 m²
Beam: 3.05 m
Displacement: 4,309 kg
Ballast: 1,701 kg
Max Draft: 1.52 m
Construction: FG
Ballast Type: Lead
First Built: 1975
Last Built: 1976
# Built: 198
Builder: Jensen Marine (USA)
Designer: C. William Lapworth

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Westerbeke
Model: 4-91
Type: Diesel
HP: 24
Fuel: 95 L


Water: 95 L

Sailboat Calculations

S.A. / Displ.: 17.14
Bal. / Displ.: 39.47
Disp: / Len: 241.30
Comfort Ratio: 24.26
Capsize Screening Formula: 1.89
S#: 2.27
Hull Speed: 6.83 kn
Pounds/Inch Immersion: 929.01 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 12.57 m
J: 4.19 m
P: 10.82 m
E: 3.35 m
S.A. Fore: 26.35 m²
S.A. Main: 18.14 m²
S.A. Total (100% Fore + Main Triangles): 44.49 m²
S.A./Displ. (calc.): 17.14
Est. Forestay Length: 13.25 m

Sailboat Links

Designers: C. William Lapworth
Builders: Bangor Punta Corp.
Jensen Marine/Cal Boats
Related Sailboats: CAL 34
Download Boat Record:


Sometimes (incorrectly) referred to as CAL 34-2 or CAL 34 MKII.
These (CAL 2-34 CAL 34-III) later versions of the original CAL 34 share the same hull, but with a higher aspect rig as well as a few other variations.
Differences from earlier version:
Additional hull reinforcement.
Wheel steering available as an option. Fuel and water capacity increased.
Rig has higher aspect ratio. (possibly for more favorable IOR rating?)