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CAL 21
Built by Jensen Marine (USA)
• Designed by C. William Lapworth
General Information
Hull Type:
Swing Keel
Rigging Type:
Fractional Sloop
Construction:
FG
First Built:
1969
Last Built:
1976
Number Built:
500
Dimensions
Length Overall (LOA):
6.25 m
Length Waterline (LWL):
5.08 m
Beam:
2.03 m
Draft (Max):
1.31 m
Draft (Min):
0.24 m
Weight & Ballast
Displacement:
499 kg
Ballast:
163 kg
Ballast Type:
Iron
Sail Plan
Foresail Area:
9.08 m²
Mainsail Area:
9.08 m²
Total Sail Area (calculated):
18.16 m²
Sail Area (reported):
18.21 m²
I (Fore Triangle Height):
7.01 m
J (Fore Triangle Base):
2.59 m
P (Mainsail Hoist):
7.01 m
E (Boom Length):
2.59 m
Engine & Systems
Performance Ratios
Hull Speed:
5.47 knots
SA/Displacement (Calculated):
28.87
SA/Displacement (Reported):
29.49
Ballast/Disp Ratio:
32.73%
Displacement/Length:
106.01
Comfort Ratio:
7.61
Capsize Screening:
2.59
S-Number:
5.95
Notes
The CAL 21 was equipped with a swing keel that could be completely raised inside a slot/cavity below the cockpit sole. When the keel was down, a plug was dropped into place to cover the opening and make a flush surface around the keel 'root'. A cable had to be attached or re-attached, to raise or lower the keel.