Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 8.84 m
LWL: 7.32 m
S.A. (reported): 39.21 m²
Beam: 2.82 m
Displacement: 3,629 kg
Ballast: 1,520 kg
Max Draft: 1.37 m
Construction: FG
Ballast Type: Lead
First Built: 1968
Last Built: 1974
# Built: 624
Builder: Jensen Marine (USA)
Designer: William Lapworth

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Universal
Model: Atomic 4
Type: Gas
HP: 30
Fuel: 76 L


Water: 76 L

Sailboat Calculations

S.A. / Displ.: 16.93
Bal. / Displ.: 41.88
Disp: / Len: 258.35
Comfort Ratio: 25.04
Capsize Screening Formula: 1.85
S#: 2.09
Hull Speed: 6.56 kn
Pounds/Inch Immersion: 793.23 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 11.28 m
J: 3.76 m
P: 9.65 m
E: 3.73 m
S.A. Fore: 21.19 m²
S.A. Main: 18.02 m²
S.A. Total (100% Fore + Main Triangles): 39.21 m²
S.A./Displ. (calc.): 16.94
Est. Forestay Length: 11.89 m
Mast Height from DWL: 12.50 m

Sailboat Links

Designers: C. William Lapworth
Builders: Bangor Punta Corp.
Calgan Marine Ltd. (CAN)
Jensen Marine/Cal Boats
Products: The Sail Warehouse
Related Sailboats: CAL 2-29
Download Boat Record:


The CAL 29 was one of this builders most popular models.
The CAL 2-29, introduced somewhat later, was the same boat but with a number of extra features that came as standard equipment. (see CAL 2-29 for more details.) It appears that, for a time, both versions were being built simultaneously. Including both versions, more than 1000 were built.
Special thanks to CAL 2-29 owner David Burnham for providing the information that finally solved this mystery.