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X-21(NORTON) FR
Built by Perkins Boat Co. (USA)
• Designed by Tom Norton
General Information
Hull Type:
Fin w/spade rudder
Rigging Type:
Fractional Sloop
Construction:
FG
First Built:
1979
Dimensions
Length Overall (LOA):
6.40 m
Length Waterline (LWL):
5.33 m
Beam:
1.98 m
Draft (Max):
1.22 m
Weight & Ballast
Displacement:
1,089 kg
Ballast:
544 kg
Sail Plan
Foresail Area:
8.94 m²
Mainsail Area:
10.27 m²
Total Sail Area (calculated):
19.21 m²
Sail Area (reported):
19.23 m²
I (Fore Triangle Height):
7.62 m
J (Fore Triangle Base):
2.35 m
P (Mainsail Hoist):
7.92 m
E (Boom Length):
2.59 m
Engine & Systems
Performance Ratios
Hull Speed:
5.61 knots
SA/Displacement (Calculated):
18.15
SA/Displacement (Reported):
18.52
Ballast/Disp Ratio:
50.00%
Displacement/Length:
199.92
Comfort Ratio:
16.51
Capsize Screening:
1.94
S-Number:
2.88