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IRWIN 21 FREE SPIRIT
Built by Irwin Yachts (USA)
• Designed by Ted Irwin
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General Information
Hull Type:
Lifting Keel
Rigging Type:
Fractional Sloop
First Built:
1980
Dimensions
Length Overall (LOA):
6.40 m
Length Waterline (LWL):
5.03 m
Beam:
2.44 m
Draft (Max):
1.37 m
Draft (Min):
0.26 m
Weight & Ballast
Displacement:
816 kg
Ballast:
340 kg
Ballast Type:
Lead
Sail Plan
Foresail Area:
8.92 m²
Mainsail Area:
9.79 m²
Sail Area:
18.71 m²
Sail Area (reported):
18.77 m²
I (Fore Triangle Height):
7.32 m
J (Fore Triangle Base):
2.44 m
P (Mainsail Hoist):
7.47 m
E (Boom Length):
2.62 m
Est. Forestay Length:
7.71 m
Engine & Systems
Performance Ratios
Hull Speed:
5.44 knots
SA/Displacement (Calc):
21.82
SA/Displacement (Reported):
21.89
Ballast/Disp Ratio:
41.67%
Displacement/Length:
178.88
Comfort Ratio:
9.76
Capsize Screening:
2.63
S-Number:
3.55
Immersion:
84 kg/cm
Notes
The FREE SPIRIT is similar to the IRWIN MINI-TON but with a smaller rig.
Market Value
No pricing data available yet.
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