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AMERICAN 21
Built by American Fiberglass Corp. (USA)
• Designed by Ron Bertholf
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General Information
Hull Type:
Lifting Keel
Rigging Type:
Masthead Sloop
First Built:
1973
Dimensions
Length Overall (LOA):
6.40 m
Length Waterline (LWL):
5.39 m
Beam:
2.44 m
Draft (Max):
1.22 m
Draft (Min):
0.46 m
Weight & Ballast
Displacement:
998 kg
Ballast:
249 kg
Ballast Type:
Lead
Sail Plan
Foresail Area:
9.62 m²
Mainsail Area:
8.32 m²
Sail Area:
17.93 m²
Sail Area (reported):
19.42 m²
I (Fore Triangle Height):
7.65 m
J (Fore Triangle Base):
2.51 m
P (Mainsail Hoist):
7.04 m
E (Boom Length):
2.36 m
Est. Forestay Length:
8.05 m
Engine & Systems
Performance Ratios
Hull Speed:
5.63 knots
SA/Displacement (Calc):
18.30
SA/Displacement (Reported):
19.82
Ballast/Disp Ratio:
25.00%
Displacement/Length:
178.02
Comfort Ratio:
11.41
Capsize Screening:
2.46
S-Number:
3.14
Immersion:
90 kg/cm
Market Value
No pricing data available yet.
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