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CAL 31

Built by Bangor Punta Marine • Designed by William Lapworth
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CAL 31 - Photo
CAL 31 - Drawing

General Information

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
Construction: FG
First Built: 1979
Last Built: 1984

Dimensions

Length Overall (LOA): 9.60 m
Length Waterline (LWL): 7.82 m
Beam: 3.05 m
Draft (Max): 1.52 m
Max Height: 13.84 m

Weight & Ballast

Displacement: 4,159 kg
Ballast: 1,633 kg
Ballast Type: Lead

Sail Plan

Foresail Area: 26.02 m²
Mainsail Area: 19.51 m²
Total Sail Area (calculated): 45.53 m²
Sail Area (reported): 45.52 m²
I (Fore Triangle Height): 12.65 m
J (Fore Triangle Base): 4.11 m
P (Mainsail Hoist): 10.67 m
E (Boom Length): 3.66 m

Engine & Systems

Engine Make: Universal
Engine Type: Diesel
Engine Power: 16 HP
Fuel Capacity: 76 L
Water Capacity: 212 L

Performance Ratios

Hull Speed: 6.79 knots
SA/Displacement (Calculated): 17.61
SA/Displacement (Reported): 17.95
Ballast/Disp Ratio: 39.26%
Displacement/Length: 242.02
Comfort Ratio: 24.07
Capsize Screening: 1.91
S-Number: 2.34

Notes

Shoal draft: 4.25'/1.3m.