Jeanneau Rush 31

1979 — 1985
Designer
Ron Holland
Builder
Jeanneau
Associations
Half Ton Class
TOUR DE FRANCE A LA VOILE
# Built
580
Hull
Monohull
Keel
Fin
Rudder
Spade
Construction
FG

Dimensions

Length Overall
29 11 / 9.1 m
Waterline Length
25 5 / 7.8 m
Beam
10 4 / 3.2 m
Draft
4 7 / 1.4 m
Displacement
6,620 lb / 3,003 kg
Ballast
2,760 lb / 1,250 kg (Iron or Lead)
  • 1 / 2
  • 2 / 2

Rig and Sails

Type
Sloop
Reported Sail Area
389′² / 36.1 m²
Total Sail Area
389′² / 36.1 m²
Mainsail
Sail Area
163′² / 15.1 m²
P
32 6 / 9.9 m
E
10 0 / 3.1 m
Mast Height
?
Foresail
Sail Area
226′² / 21 m²
I
37 11 / 11.6 m
J
11 10 / 3.6 m
Forestay Length
39 9 / 12.1 m

Auxilary Power

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

Accomodations

Water Capacity
24 gal / 91 l
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
6.76 knots
Sail Area/Displacement
17.65
good performance
Ballast/Displacement
41.62
stiffer, more powerful
Displacement/Length
179.92
light
Comfort Ratio
16.92
lightweight racing boat
Capsize Screening
2.2
better suited for coastal cruising

Notes

Based on a successful IOR 1/2 ton design, a number of different versions of the RUSH 31 were available besides the basic model with various performance enhancements:
The GTE, REGATTA which had a lead keel, and the ROYAL. (The RUSH ROYAL STD was a selection for the ‘Tour de France à la voile’ 1982-1983.)
In the US a boat based on this hull design was built under licence as the CAL 9.2.

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