OFFSHORE 31 (CHEOY LEE)

OFFSHORE 31 (CHEOY LEE) photo OFFSHORE 31 (CHEOY LEE) drawing

Sailboat Specifications


Hull Type:
Long Keel
Rigging Type:
Masthead Sloop
LOA:
31.00 ft / 9.45 m
LWL:
23.33 ft / 7.11 m
Beam:
8.75 ft / 2.67 m
S.A. (reported):
403.00 ft2 / 37.44 m2
Draft (max):
3.67 ft / 1.12 m
Displacement:
10,700 lb / 4,853 kg
Ballast:
3,800 lb / 1,724 kg
S.A./Disp.:
13.32
Bal./Disp.:
35.51
Disp./Len.:
376.18
Construction:
FG
Ballast Type:
Iron
First Built:
1968
# Built:
150
Builder:
Cheoy Lee Shipyard Ltd.(HK)
Designer:
Herreshoff/Cheoy Lee Shipyard

Sailboat Calculations

S.A./Disp.:
13.32
Bal./Disp.:
35.51
Disp./Len.:
376.18
Comfort Ratio:
35.88
Capsize Screening Formula:
1.59
S#:
1.03

Rig and Sail Particulars

I:
33.00 ft / 10.06 m
J:
12.16 ft / 3.71 m
P:
30.00 ft / 9.14 m
E:
13.50 ft / 4.11 m
S.A. Fore:
200.64 ft2 / 18.64 m2
S.A. Main:
202.50 ft2 / 18.81 m2
S.A. Total (100% Fore + Main Triangles)
403.14 ft2 / 37.45 m2
S.A./Disp. (calc.):
13.33
Est. Forestay Len.:
35.17 ft / 10.72 m

Notes

It is thought that the OFFSHORE 31 is based on the BERMUDA 30 (in turn based on the HERRESOFF 28) with an extended counter and inboard rudder. Available as a sloop, sloop w/bowsprit or ketch.

Dimensions for ketch rig:
I: 31.50'/9.60m
J: 9.50'/2.90m
P: 27.50'/8.38m
E: 13.08'/ 3.99m
PY: 18.00'/5.49m
EY: 8.75'/2.67m
Tot. SA: 408.23 ft2/37.92m2

Dimensions for sloop w/bowsprit:
I: 33.00'/10.06m
J: 14.40'/4.39m
P: 30.00'/9.14m
E: 13.50'/4.11m
Tot. SA: 440.10 ft2/40.89m2
Dimensions (not rig) from orig. brochure. Dimensions and especially displacement reported by others vary.

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