Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/transom hung rudder
Rigging Type: Fractional Sloop
LOA: 26.25 ft
LWL: 22.00 ft
S.A. (reported): 338.00 ft²
Beam: 8.25 ft
Displacement: 2,900.00 lb
Ballast: 1,400.00 lb
Max Draft: 4.90 ft
Construction: FG
First Built: 1992
Builder: J Boats Tillotson Pearson (USA)
Designer: Rod Johnstone

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Sailboat Calculations

S.A. / Displ.: 26.66
Bal. / Displ.: 48.28
Disp: / Len: 121.59
Comfort Ratio: 11.58
Capsize Screening Formula: 2.32
S#: 5.20
Hull Speed: 6.29 kn
Pounds/Inch Immersion: 648.52 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 31.50 ft
J: 9.50 ft
P: 30.00 ft
E: 12.50 ft
ISP: 33.00 ft
S.A. Fore: 149.63 ft²
S.A. Main: 187.50 ft²
S.A. Total (100% Fore + Main Triangles): 337.13 ft²
S.A./Displ. (calc.): 26.59
Est. Forestay Length: 32.90 ft

Sailboat Links

Designers: Rod Johnstone
Builders: J Boats
TPI Composites
Waterline Systems LLC
Associations: J/80 Class Website
Download Boat Record:


Photo courtesy of Adam Hunt.