Columbia 31

1965 — 1968
insignia
Designer
Charles Morgan
Builder
Columbia Yachts
Associations
?
# Built
97
Hull Type
Keel/Cbrd.
Construction
FG

Dimensions

Length Overall
30 6 / 9.3 m
Waterline Length
21 5 / 6.6 m
Beam
9 10 / 3 m
Draft
3 1 / 0.9 m 6 11 / 2.1 m
Displacement
8,500 lbs / 3,856 kg
Ballast
3,400 lbs / 1,542 kg
drawing

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
422.1 ft2 / 39.2 m2
Total Sail Area
422.3 ft2 / 39.2 m2
Mainsail
Sail Area
221.1 ft2 / 20.5 m2
P
30 6 / 9.3 m
E
14 6 / 4.4 m
Mast Height
?
Foresail
Sail Area
201.1 ft2 / 18.7 m2
I
35 5 / 10.8 m
J
11 3 / 3.5 m
Forestay Length
37 3 / 11.4 m

Auxilary Power

Make
Universal
Model
Atomic 4
HP
20
Fuel Type
Gas
Fuel Capacity
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
6.21 knots
Sail Area/Displacement
16.21
good performance
Ballast/Displacement
40.0
stiffer, more powerful
Displacement/Length
381.82
ultraheavy
Comfort Ratio
25.68
coastal cruiser
Capsize Screening
1.93
better suited for ocean passages

Notes

Derived from the Morgan designed ‘TIGER CUB’(1963?).
TALL MAST:
I: 37.5’
J: 11.33’
P: 33.0’
E: 14.5’


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