Ufo 31

1976 — 1981
Designers
Holman & Pye
Kim Holman
Builders
Oyster Marine
Colvic Craft
Associations
?
# Built
?
Hull Type
Fin w/spade rudder
Construction
FG

Dimensions

Length Overall
30 10 / 9.4 m
Waterline Length
25 7 / 7.8 m
Beam
10 0 / 3.1 m
Draft
5 6 / 1.7 m
Displacement
6,800 lbs / 3,084 kg
Ballast
3,400 lbs / 1,540 kg (Iron)
drawing

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
403 ft2 / 37.4 m2
Total Sail Area
402.6 ft2 / 37.4 m2
Mainsail
Sail Area
163.8 ft2 / 15.2 m2
P
34 6 / 10.5 m
E
9 6 / 2.9 m
Mast Height
?
Foresail
Sail Area
238.7 ft2 / 22.2 m2
I
38 5 / 11.7 m
J
12 4 / 3.8 m
Forestay Length
40 5 / 12.3 m

Auxilary Power

Make
Volvo Penta
Model
?
HP
20
Fuel Type
Diesel
Fuel Capacity
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
6.78 knots
Sail Area/Displacement
17.96
good performance
Ballast/Displacement
49.93
stiffer, more powerful
Displacement/Length
180.31
light
Comfort Ratio
17.77
lightweight racing boat
Capsize Screening
2.12
better suited for coastal cruising

For Sale

Have a sailboat to sell?
List it for free and it will show up here.

Subscribe

Get occassional updates about new features or featured sailboats.
You can opt out or contact us any time.