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ALLMAND 31

Built by Allmand Boats Inc. (USA) • Designed by Walter Scott & T. R. Allmand
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ALLMAND 31 - Photo
ALLMAND 31 - Drawing

General Information

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
Construction: FG
First Built: 1978
Last Built: 1985

Dimensions

Length Overall (LOA): 9.37 m
Length Waterline (LWL): 8.51 m
Beam: 3.45 m
Draft (Max): 1.17 m

Weight & Ballast

Displacement: 5,035 kg
Ballast: 1,950 kg
Ballast Type: Lead or Iron

Sail Plan

Foresail Area: 22.85 m²
Mainsail Area: 19.97 m²
Total Sail Area (calculated): 42.82 m²
Sail Area (reported): 42.83 m²
I (Fore Triangle Height): 12.50 m
J (Fore Triangle Base): 3.66 m
P (Mainsail Hoist): 10.49 m
E (Boom Length): 3.81 m

Engine & Systems

Engine Make: Universal
Engine Type: Diesel
Engine Model: M16 or M35
Fuel Capacity: 106 L
Water Capacity: 151 L

Performance Ratios

Hull Speed: 7.08 knots
SA/Displacement (Calculated): 14.58
SA/Displacement (Reported): 14.87
Ballast/Disp Ratio: 38.74%
Displacement/Length: 227.68
Comfort Ratio: 23.52
Capsize Screening: 2.04
S-Number: 2.16

Notes

First introduced as the SAIL 31.