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CAL T/4 built by Jensen Marine (USA) and designed by C. William Lapworth. Her first hull was built in 1971 with an overall lengh of 7.37 m or 24.17 ft long

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CAL T/4 Sailboat Specifications​


Overall Length (LOA) m / ft7.37 m / 24.17 ft
Builder(s)Jensen Marine
Designer(s)C. William Lapworth
CountryUnited States
Hull TypeFin w/transom hung rudder
Number of Hulls Built238
First Hull Built1971
Last Hull Built1972
Rigging TypeMasthead Sloop
Ballast Ratio50


Overall Length (LOA) 7.37 m / 24.17 ft
Waterline Length (LWL)6.40 m / 21.00 ft
Beam (width)2.44 m / 8.00 ft
Draft1.22 m / 4.00 ft
Light Displacement (MLC) 1814 kg / 4000 lb
Maximum Displacement1814 kg / 4000 lb
Ballast Weight907 kg / 2000 lb


Capsize Screening Formula (CSF)2.02
Comfort Ratio17.64
Displacement-Length Ratio (DLR)192.82
Ballast Ratio50
Sail Area to Displacement16.3

Above Deck

Estimated Forestay Length9.64 m / 31.62 ft
Reported Sail Area23.78 m² / 256.00 ft²
Total Sail Area23.80 m² / 256.20 ft²
Mainsail Area9.87 m² / 106.20 ft²
I30.00 ft * 9.14 m
J10.00 ft * 3.05 m
P23.60 ft * 7.19 m
E9.00 ft * 2.74 m
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