Achilles 9M

1975 — 1984
Designer
Chris Butler
Builder
Butler Mouldings Ltd.
Association
Achilles Yachts Owners Assoc.
# Built
100
Hull Type
Fin with rudder on skeg
Construction
FG

Dimensions

Length Overall
29 9 / 9.1 m
Waterline Length
25 5 / 7.8 m
Beam
8 11 / 2.7 m
Draft
5 6 / 1.7 m
Displacement
7,000 lbs / 3,175 kg
Ballast
3,000 lbs / 1,360 kg (Iron)
drawing

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
354 ft2 / 32.9 m2
Total Sail Area
353.6 ft2 / 32.9 m2
Mainsail
Sail Area
151.1 ft2 / 14 m2
P
31 0 / 9.5 m
E
9 8 / 3 m
Mast Height
?
Foresail
Sail Area
202.5 ft2 / 18.8 m2
I
35 4 / 10.8 m
J
11 5 / 3.5 m
Forestay Length
37 1 / 11.3 m

Auxilary Power

Make
Volvo Penta
Model
?
HP
?
Fuel Type
Diesel
Fuel Capacity
15 gal / 57 l

Accomodations

Water Capacity
30 gal / 114 l
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
6.76 knots
Sail Area/Displacement
15.48
under powered
Ballast/Displacement
42.83
stiffer, more powerful
Displacement/Length
190.25
light
Comfort Ratio
21.53
coastal cruiser
Capsize Screening
1.88
better suited for ocean passages

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