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ALPA 42

ALPA 42 built by Alpa (ITA) and designed by Sparkman & Stephens. Her first hull was built in 1973 with an overall lengh of 12.00 m or 39.37 ft long

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ALPA 42 Sailboat Specifications​

Features

Overall Length (LOA) m / ft12.00 m / 39.37 ft
Builder(s)Alpa
Designer(s)Sparkman & Stephens
BrandAlpa
CountryItaly
Hull TypeFin with rudder on skeg
Number of Hulls Built8
First Hull Built1973
Rigging TypeStaysail Ketch
UnsinkableNo
TrailerableNo
Freshwater Tank Capacity lt/gal401 L / 106 gal
Ballast Ratio37.5

Dimensions

Overall Length (LOA) 12.00 m / 39.37 ft
Waterline Length (LWL)11.45 m / 37.57 ft
Beam (width)3.43 m / 11.25 ft
Draft1.85 m / 6.07 ft
Light Displacement (MLC) 12000 kg / 26455 lb
Maximum Displacement12000 kg / 26455 lb
Ballast Weight4500 kg / 9920 lb

Performance

Capsize Screening Formula (CSF)1.51
Comfort Ratio42.71
Displacement-Length Ratio (DLR)222.71
Ballast Ratio37.5
Sail Area to Displacement13.82

Above Deck

Estimated Forestay Length15.36 m / 50.38 ft
Reported Sail Area70.98 m² / 764.00 ft²
Total Sail Area59.87 m² / 644.48 ft²
Mainsail Area27.38 m² / 294.66 ft²
I48.25 ft * 14.71 m
J14.50 ft * 4.42 m
P42.86 ft * 13.06 m
E13.75 ft * 4.19 m
PY26.75 ft * 8.15 m
EY9.00 ft * 2.74 m
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