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ALPA A27
Built by Alpa (ITA)
• Designed by Sparkman & Stephens
General Information
Hull Type:
Fin w/transom hung rudder
Rigging Type:
Masthead Sloop
Construction:
FG
First Built:
1975
Dimensions
Length Overall (LOA):
8.17 m
Length Waterline (LWL):
7.01 m
Beam:
2.93 m
Draft (Max):
1.60 m
Weight & Ballast
Displacement:
2,930 kg
Ballast:
1,041 kg
Sail Plan
Foresail Area:
20.00 m²
Mainsail Area:
15.68 m²
Total Sail Area (calculated):
35.68 m²
Sail Area (reported):
35.67 m²
I (Fore Triangle Height):
11.58 m
J (Fore Triangle Base):
3.45 m
P (Mainsail Hoist):
10.29 m
E (Boom Length):
3.05 m
Engine & Systems
Performance Ratios
Hull Speed:
6.43 knots
SA/Displacement (Calculated):
17.43
SA/Displacement (Reported):
17.77
Ballast/Disp Ratio:
35.55%
Displacement/Length:
236.99
Comfort Ratio:
20.29
Capsize Screening:
2.07
S-Number:
2.38
Notes
S&S design #2241.