CAL 21

CAL 21 photo CAL 21 drawing

Sailboat Specifications


Hull Type:
Swing Keel
Rigging Type:
Fractional Sloop
LOA:
20.50 ft / 6.25 m
LWL:
16.67 ft / 5.08 m
S.A. (reported):
196.00 ft2 / 18.21 m2
Beam:
6.67 ft / 2.03 m
Draft (max):
4.30 ft / 1.31 m
Draft (min):
0.80 ft / 0.24 m
Displacement:
1,100 lb / 499 kg
Ballast:
360 lb / 163 kg
S.A./Disp.:
29.49
Bal./Disp.:
32.73
Disp./Len.:
106.01
Construction:
FG
Ballast Type:
Iron
First Built:
1969
Last Built:
1972
# Built:
500
Builder:
Jensen Marine (USA)
Designer:
C. William Lapworth
Website:

Sailboat Calculations

S.A./Disp.:
29.49
Bal./Disp.:
32.73
Disp./Len.:
106.01
Comfort Ratio:
7.61

Rig and Sail Particulars

I:
23.00 ft / 7.01 m
J:
8.50 ft / 2.59 m
P:
23.00 ft / 7.01 m
E:
8.50 ft / 2.59 m
SPL/TPS:
ISP:
S.A. Fore:
97.75 ft2 / 9.08 m2
S.A. Main:
97.75 ft2 / 9.08 m2
S.A. Total (100% Fore + Main Triangles)
195.50 ft2 / 18.16 m2
S.A./Disp. (calc.):
29.41
Est. Forestay Len.:
24.52 ft / 7.47 m

Sailboat Links

Notes

The original 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. Besides reducing drag while sailing, the system allowed the hull to sit lower on a trailer.



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