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ALPA 7.4

Built by Alpa (ITA) • Designed by Sparkman & Stephens
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General Information

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
Construction: FG
First Built: 1974
Last Built: 1981

Dimensions

Length Overall (LOA): 7.40 m
Length Waterline (LWL): 6.23 m
Beam: 2.60 m
Draft (Max): 1.30 m

Weight & Ballast

Displacement: 1,900 kg

Sail Plan

Foresail Area: 15.25 m²
Mainsail Area: 10.90 m²
Total Sail Area (calculated): 26.15 m²
Sail Area (reported): 26.11 m²
I (Fore Triangle Height): 9.84 m
J (Fore Triangle Base): 3.10 m
P (Mainsail Hoist): 7.79 m
E (Boom Length): 2.80 m

Engine & Systems

Engine Make: Farymann
Engine Type: Diesel
Engine Power: 11 HP
Fuel Capacity: 23 L
Water Capacity: 95 L

Performance Ratios

Hull Speed: 6.06 knots
SA/Displacement (Calculated): 17.05
SA/Displacement (Reported): 17.35
Displacement/Length: 218.99
Comfort Ratio: 17.25
Capsize Screening: 2.12
S-Number: 2.53