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ALPA A9

ALPA A9 built by Alpa (ITA) and designed by Illingworth & Associates. Her first hull was built in 1967 with an overall lengh of 9.09 m or 29.82 ft long

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ALPA A9 Sailboat Specifications​

Features

Overall Length (LOA) m / ft9.09 m / 29.82 ft
Builder(s)Alpa
Designer(s)Illingworth & Associates
BrandAlpa
CountryItaly
Hull TypeFin Keel
First Hull Built1967
Last Hull Built1970
Rigging TypeMasthead Sloop
UnsinkableNo
TrailerableNo
Ballast Ratio42.31

Dimensions

Overall Length (LOA) 9.09 m / 29.82 ft
Waterline Length (LWL)6.70 m / 21.98 ft
Beam (width)2.70 m / 8.86 ft
Draft1.60 m / 5.25 ft
Light Displacement (MLC) 3900 kg / 8598 lb
Maximum Displacement3900 kg / 8598 lb
Ballast Weight1650 kg / 3638 lb

Performance

Capsize Screening Formula (CSF)1.73
Comfort Ratio29.87
Displacement-Length Ratio (DLR)361.47
Ballast Ratio42.31
Sail Area to Displacement13.54

Above Deck

Estimated Forestay Length11.39 m / 37.38 ft
Reported Sail Area32.89 m² / 354.00 ft²
Total Sail Area32.84 m² / 353.48 ft²
Mainsail Area16.11 m² / 173.38 ft²
I36.02 ft * 10.98 m
J10.00 ft * 3.05 m
P31.10 ft * 9.48 m
E11.15 ft * 3.40 m
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