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J/70

Built by J Boats (USA) • Designed by Alan Johnstone
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J/70 - Photo
J/70 - Drawing

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General Information

Hull Type: Fin w/transom hung rudder
Rigging Type: Fractional Sloop
First Built: 2012
Number Built: 1100

Dimensions

Length Overall (LOA): 6.93 m
Length Waterline (LWL): 6.24 m
Beam: 2.25 m
Draft (Max): 1.50 m

Weight & Ballast

Displacement: 812 kg
Ballast: 285 kg
Ballast Type: Lead

Sail Plan

Foresail Area: 9.55 m²
Mainsail Area: 11.47 m²
Sail Area: 21.02 m²
Sail Area (reported): 21.00 m²
I (Fore Triangle Height): 8.16 m
J (Fore Triangle Base): 2.34 m
P (Mainsail Hoist): 7.97 m
E (Boom Length): 2.88 m
ISP: 9.19 m
Est. Forestay Length: 8.49 m

Engine & Systems

Performance Ratios

Hull Speed: 6.06 knots
SA/Displacement (Calc): 24.61
SA/Displacement (Reported): 24.58
Ballast/Disp Ratio: 35.08%
Displacement/Length: 93.16
Comfort Ratio: 9.12
Capsize Screening: 2.43
S-Number: 5.60
Immersion: 96 kg/cm

Notes

Spinnaker (asym.) area: 491 sq.ft./45 m²

Market Value

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