Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 11.30 m
LWL: 9.40 m
S.A. (reported): 59.37 m²
Beam: 3.51 m
Displacement: 4,445 kg
Ballast: 2,087 kg
Max Draft: 2.21 m
Construction: FG
Ballast Type: Lead
First Built: 1984
Last Built: 1988
# Built: 65
Builder: Alsberg Bros. (USA)
Designer: Carl Schumacher

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Yanmar
Model: 2GMF
Type: Diesel
HP: 18
Fuel: 114 L


Water: 322 L

Sailboat Calculations

S.A. / Displ.: 22.40
Bal. / Displ.: 46.94
Disp: / Len: 149.30
Comfort Ratio: 17.90
Capsize Screening Formula: 2.15
S#: 4.10
Hull Speed: 7.44 kn
Pounds/Inch Immersion: 1,266.83 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 14.86 m
J: 4.37 m
P: 12.80 m
E: 4.19 m
S.A. Fore: 32.45 m²
S.A. Main: 26.83 m²
S.A. Total (100% Fore + Main Triangles): 59.28 m²
S.A./Displ. (calc.): 22.37
Est. Forestay Length: 15.49 m

Sailboat Links

Designers: Carl Schumacher
Builders: Alsberg Brothers Boatworks
Associations: Express 37 Class Association
Download Boat Record:


After hull #25 the boats were fitted with a Yanmar 3GMF (27 HP). Some have a shallower keel.
A later Mk II version (after hull #58?) featured a more cruising oriented interior. (10 built)