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YACHTING WORLD DIAMOND
• Designed by Jack Holt
General Information
Hull Type:
Fin Keel w/bulb
Rigging Type:
Fractional Sloop
Construction:
Plywd. Alum. FG double chine
First Built:
1961
Dimensions
Length Overall (LOA):
9.18 m
Length Waterline (LWL):
7.30 m
Beam:
3.00 m
Draft (Max):
1.30 m
Weight & Ballast
Displacement:
1,075 kg
Ballast:
508 kg
Ballast Type:
Lead
Sail Plan
Foresail Area:
11.69 m²
Mainsail Area:
14.29 m²
Total Sail Area (calculated):
25.98 m²
Sail Area (reported):
26.01 m²
I (Fore Triangle Height):
7.67 m
J (Fore Triangle Base):
3.05 m
P (Mainsail Hoist):
8.15 m
E (Boom Length):
3.51 m
Engine & Systems
Performance Ratios
Hull Speed:
6.56 knots
SA/Displacement (Calculated):
24.76
SA/Displacement (Reported):
25.26
Ballast/Disp Ratio:
47.26%
Displacement/Length:
77.02
Comfort Ratio:
6.75
Capsize Screening:
2.96
S-Number:
6.11
Notes
Commissioned in 1960 by the editors of 'Yachting World' magazine for a high performance one-design open keelboat at a reasonable cost. Boats could be wood, fiberglass or aluminum. For racing, 2-4 crew with one trapeze permitted.