Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Fractional Sloop
LOA: 7.92 m
LWL: 6.58 m
S.A. (reported): 30.38 m²
Beam: 2.57 m
Displacement: 1,247 kg
Ballast: 592 kg
Max Draft: 1.40 m
Construction: FG
First Built: 1984
Last Built: 1987
# Built: 40
Builder: Johnson Boat Works/New Orleans Marine
Designer: William Cook

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Sailboat Calculations

S.A. / Displ.: 26.72
Bal. / Displ.: 47.45
Disp: / Len: 122.16
Comfort Ratio: 10.86
Capsize Screening Formula: 2.41
S#: 5.17
Hull Speed: 6.22 kn
Pounds/Inch Immersion: 649.25 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 8.97 m
J: 2.59 m
P: 9.96 m
E: 3.71 m
S.A. Fore: 11.62 m²
S.A. Main: 18.47 m²
S.A. Total (100% Fore + Main Triangles): 30.09 m²
S.A./Displ. (calc.): 26.46
Est. Forestay Length: 9.33 m

Sailboat Links

Designers: William Cook
Builders: Johnson Boat Works (USA)
New Orleans Marine
Download Boat Record:


First boats built by New Orleans Marine. (MK I version - 6 hulls)
Molds then went to Johnson Boat Works. (MK I version - 25+ hulls)
Last boats built by New England Boat Works. (MK II version - 7 hulls)

MK I: (30) foam core.
MK II: balsa core, slightly taller cabin/cuddy, slight differences in rig and hardware.
A number of boats were delivered with an optional diesel inboard.