Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 29.70 ft
LWL: 25.92 ft
S.A. (reported): 314.00 ft²
Beam: 7.00 ft
Displacement: 4,000.00 lb
Ballast: 1,965.00 lb
Max Draft: 5.92 ft
Construction: Plywood/single chine
First Built: 1957
Builder: Many
Designer: Van de Stadt

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Sailboat Calculations

S.A. / Displ.: 19.99
Bal. / Displ.: 49.13
Disp: / Len: 102.54
Comfort Ratio: 17.10
Capsize Screening Formula: 1.77
S#: 4.66
Hull Speed: 6.82 kn
Pounds/Inch Immersion: 648.31 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 30.00 ft
J: 11.80 ft
P: 26.30 ft
E: 10.40 ft
S.A. Fore: 177.00 ft²
S.A. Main: 136.76 ft²
S.A. Total (100% Fore + Main Triangles): 313.76 ft²
S.A./Displ. (calc.): 19.98
Est. Forestay Length: 32.24 ft

Sailboat Links

Designers: E. G. Van de Stadt
Related Sailboats: ZEESLANG
Download Boat Record:


Derived from the earlier ZEESLANG of the mid 1950's and from a number of different builders around the world.
Also available with a a fractional rig.