Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 11.43 m
LWL: 9.91 m
S.A. (reported): 69.68 m²
Beam: 3.78 m
Displacement: 6,577 kg
Ballast: 2,585 kg
Max Draft: 2.13 m
Construction: FG
Ballast Type: Lead
First Built: 1989
Last Built: 1991
Builder: J Boats Tillotson Pearson (USA)
Designer: Johnstone

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Yanmar
Type: Diesel
HP: 28

Sailboat Calculations

S.A. / Displ.: 20.25
Bal. / Displ.: 39.31
Disp: / Len: 188.57
Comfort Ratio: 23.05
Capsize Screening Formula: 2.04
S#: 3.23
Hull Speed: 7.64 kn
Pounds/Inch Immersion: 1,439.96 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 15.70 m
J: 4.51 m
P: 13.72 m
E: 5.03 m
S.A. Fore: 35.41 m²
S.A. Main: 34.49 m²
S.A. Total (100% Fore + Main Triangles): 69.90 m²
S.A./Displ. (calc.): 20.32
Est. Forestay Length: 16.33 m

Sailboat Links

Designers: Rod Johnstone
Builders: J Boats
Related Sailboats: J/37
Download Boat Record:


Based on the std. J/37 but a longer coach roof, modified interior (larger galley, etc.), larger anchor well and engine re-postioned aft. Also available with a winged 'UFO' keel. (Draft:5.2')