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Sailboat Guide

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Sailboat

Achilles 840

1979
Designer
Chris Butler
Builder
Butler Mouldings Ltd.
Hull Type
Fin with rudder on skeg
Construction
FG/balsa core deck
Associations
Achilles Yachts Owners Assoc.

Dimensions

Length Overall
27.75 ft / 8.46 m
Waterline Length
24.25 ft / 7.39 m
Beam
9.00 ft / 2.74 m
Draft
5.00 ft / 1.52 m
Displacement
5,500 lb / 2,495 kg
Ballast
2,505 lb / 1,136 kg (Iron)
drawing

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
354.00 ft2 / 32.89 m2
Total Sail Area
353.57 ft2 / 32.85 m2
Mainsail
Sail Area
151.13 ft2 / 14.04 m2
P
31.00 ft / 9.45 m
E
9.75 ft / 2.97 m
Mast Height
Foresail
Sail Area
202.44 ft2 / 18.81 m2
I
35.33 ft / 10.77 m
J
11.46 ft / 3.49 m
Est. Forestay Len.
37.14 ft / 11.32 m

Spinnaker

SPL/TPS
ISP

Auxilary Power

Make
Volvo
Model
2001
HP
9.5
Type
Diesel
Fuel Capacity
26 gals / 98 L

Accomodations

Water Capacity
18 gals / 68 L
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
6.6 knots
Sail Area/Displacement
18.18
good performance
Ballast/Displacement
45.55
stiffer, more powerful
Displacement/Length
172.18
light
Comfort Ratio
17.88
lightweight racing boat
Capsize Screening
2.04
better suited for coastal cruising

Notes

Available bilge/twin or triple keels.


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