Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Fractional Sloop
LOA: 26.00 ft
LWL: 21.58 ft
S.A. (reported): 327.00 ft²
Beam: 8.42 ft
Displacement: 2,750.00 lb
Ballast: 1,305.00 lb
Max Draft: 4.58 ft
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: 29.42 ft
J: 8.50 ft
P: 32.67 ft
E: 12.17 ft
S.A. Fore: 125.04 ft²
S.A. Main: 198.80 ft²
S.A. Total (100% Fore + Main Triangles): 323.84 ft²
S.A./Displ. (calc.): 26.46
Est. Forestay Length: 30.62 ft

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.