Grand Surpise

1999
Designer
Joubert-Nivelt
Builder
Archambault Boats
Association
Grand Surprise Class (FRA)
# Built
?
Hull Type
Fin w/bulb & spade rudder
Construction
FG

Dimensions

Length Overall
31 3 / 9.5 m
Waterline Length
29 3 / 8.9 m
Beam
9 9 / 3 m
Draft
6 8 / 2.1 m
Displacement
5,840 lbs / 2,650 kg
Ballast
2,310 lbs / 1,050 kg
drawing

Rig and Sails

Type
Fractional Sloop
Reported Sail Area
544 ft2 / 50.5 m2
Total Sail Area
543.8 ft2 / 50.5 m2
Mainsail
Sail Area
318.4 ft2 / 29.6 m2
P
43 1 / 13.2 m
E
14 9 / 4.5 m
Mast Height
?
Foresail
Sail Area
225.4 ft2 / 20.9 m2
I
40 3 / 12.3 m
J
11 2 / 3.4 m
Forestay Length
41 9 / 12.8 m

Auxilary Power

Make
Lombardini
Model
?
HP
?
Fuel Type
Diesel
Fuel Capacity
7 gal / 26 l

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
7.25 knots
Sail Area/Displacement
26.83
high performance
Ballast/Displacement
39.63
less stiff, less powerful
Displacement/Length
103.68
light
Comfort Ratio
14.38
lightweight racing boat
Capsize Screening
2.17
better suited for coastal cruising

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