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J/121
Built by J Boats
• Designed by Alan Johnstone
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General Information
Hull Type:
Fin w/bulb & spade rudder
Rigging Type:
Fractional Sloop
First Built:
2018
Dimensions
Length Overall (LOA):
12.19 m
Length Waterline (LWL):
10.91 m
Beam:
3.75 m
Draft (Max):
2.36 m
Weight & Ballast
Displacement:
5,398 kg
Ballast:
2,177 kg
Ballast Type:
Iron + Lead
Sail Plan
Foresail Area:
36.54 m²
Mainsail Area:
38.65 m²
Sail Area:
75.19 m²
Sail Area (reported):
89.09 m²
I (Fore Triangle Height):
15.67 m
J (Fore Triangle Base):
4.66 m
P (Mainsail Hoist):
15.24 m
E (Boom Length):
5.07 m
Est. Forestay Length:
16.35 m
Engine & Systems
Engine Make:
Yanmar
Engine Type:
Diesel
Engine Power:
30 HP
Performance Ratios
Hull Speed:
8.02 knots
SA/Displacement (Calc):
24.93
SA/Displacement (Reported):
29.54
Ballast/Disp Ratio:
40.34%
Displacement/Length:
115.98
Comfort Ratio:
17.55
Capsize Screening:
2.16
S-Number:
5.11
Immersion:
281 kg/cm
Notes
The J/121 includes a water ballast system with a 104 gal (394 liter) tank on each side. This system allows up to an additional 867 lbs (approx) to the rail.
Market Value
No pricing data available yet.
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