Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin w/transom hung rudder
Rigging Type: Fractional Sloop
LOA: 6.93 m
LWL: 6.24 m
S.A. (reported): 21.00 m²
Beam: 2.25 m
Displacement: 812 kg
Ballast: 285 kg
Max Draft: 1.50 m
Construction: FG
Ballast Type: Lead
First Built: 2012
# Built: 1100
Builder: J Boats (USA)
Designer: Alan Johnstone

KLSC Leaderboard

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Sailboat Calculations

Definitions
S.A. / Displ.: 24.58
Bal. / Displ.: 35.08
Disp: / Len: 93.16
Comfort Ratio: 9.12
Capsize Screening Formula: 2.43
S#: 5.60
Hull Speed: 6.06 kn
Pounds/Inch Immersion: 539.78 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 8.16 m
J: 2.34 m
P: 7.97 m
E: 2.88 m
ISP: 9.19 m
S.A. Fore: 9.55 m²
S.A. Main: 11.47 m²
S.A. Total (100% Fore + Main Triangles): 21.02 m²
S.A./Displ. (calc.): 24.61
Est. Forestay Length: 8.49 m

Sailboat Links

Designers: Alan Johnstone
Builders: J Boats
Associations: J/70 Class Association
J/70 International Class Association
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Notes

Spinnaker (asym.) area: 491 sq.ft./45 m²
More than 1100 delivered as of 2016.