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Sailboat Guide

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Sailboat

Cal 20

1961 — 1975
Designer
C. William Lapworth
Builder
Jensen Marine/Cal Boats
Calgan Marine Ltd.
Hull Type
Fin w/transom hung rudder
Construction
FG
Associations
Cal 20 National Class Association

Dimensions

Length Overall
20.00 ft / 6.10 m
Waterline Length
18.00 ft / 5.49 m
Beam
7.00 ft / 2.13 m
Draft
3.33 ft / 1.01 m
Displacement
1,950 lb / 885 kg
Ballast
900 lb / 408 kg
Ballast Type
?
drawing

Rig and Sails

Type
Fractional Sloop
Reported Sail Area
195.00 ft2 / 18.12 m2
Total Sail Area
195.30 ft2 / 18.14 m2
Mainsail
Sail Area
115.00 ft2 / 10.68 m2
P
23.00 ft / 7.01 m
E
10.00 ft / 3.05 m
Mast Height
Foresail
Sail Area
80.30 ft2 / 7.46 m2
I
22.00 ft / 6.71 m
J
7.30 ft / 2.23 m
Est. Forestay Len.
23.18 ft / 7.07 m
Mizzen
PY
EY

Auxilary Power

Make
?
Model
?
HP
?
Type
?
Fuel Capacity
?

Accomodations

Water Capacity
?

Calculations

Hull Speed
5.69 knots
Sail Area/Displacement
19.99
good performance
Ballast/Displacement
46.15
stiffer, more powerful
Displacement/Length
149.27
light
Comfort Ratio
12.05
lightweight racing boat
Capsize Screening
2.24
better suited for coastal cruising

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