Mistral 31

1978
Designer
Rob Humphreys
Builder
Fairey Allday Ltd. (UK)
Associations
?
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Spade
Construction
FG

Dimensions

Length Overall
31 1 / 9.5 m
Waterline Length
23 8 / 7.2 m
Beam
10 2 / 3.1 m
Draft
5 2 / 1.6 m
Displacement
6,000 lb / 2,722 kg
Ballast
?

Rig and Sails

Type
Sloop
Reported Sail Area
430′² / 40 m²
Total Sail Area
?
Mainsail
Sail Area
?
P
?
E
?
Mast Height
?
Foresail
Sail Area
?
I
?
J
?
Forestay Length
?

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
6.52 knots
Sail Area/Displacement
20.84
high performance
Ballast/Displacement
?
Displacement/Length
201.21
moderate
Comfort Ratio
16.11
lightweight racing boat
Capsize Screening
2.25
better suited for coastal cruising

Notes

Derived from the successful 1/2 ton racer ‘Roller Coaster’. Later, Trapper Yachts aquired the molds and it became the TRAPPER 950.

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