Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 37.08 ft
LWL: 30.83 ft
S.A. (reported): 639.00 ft²
Beam: 11.50 ft
Displacement: 9,800.00 lb
Ballast: 4,600.00 lb
Max Draft: 7.25 ft
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: 30 gals


Water: 85 gals

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: 48.75 ft
J: 14.33 ft
P: 42.00 ft
E: 13.75 ft
S.A. Fore: 349.29 ft²
S.A. Main: 288.75 ft²
S.A. Total (100% Fore + Main Triangles): 638.04 ft²
S.A./Displ. (calc.): 22.37
Est. Forestay Length: 50.81 ft

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)