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J/40 built by J Boats Tillotson Pearson (USA) and designed by Johnstone. Her first hull was built in 1984 with an overall lengh of 12.19 m or 40.00 ft long

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J/40 Sailboat Specifications​


Overall Length (LOA) m / ft12.19 m / 40.00 ft
Builder(s)J Boats Tillotson Pearson
BrandJ Boats
CountryUnited States
Hull TypeFin w/spade rudder
Number of Hulls Built85
First Hull Built1984
Last Hull Built1993
Ballast TypeLead
Rigging TypeMasthead Sloop
Freshwater Tank Capacity lt/gal227 L / 60 gal
Ballast Ratio36.11


Overall Length (LOA) 12.19 m / 40.00 ft
Waterline Length (LWL)10.36 m / 34.00 ft
Beam (width)3.71 m / 12.17 ft
Draft1.98 m / 6.50 ft
Light Displacement (MLC) 8165 kg / 18000 lb
Maximum Displacement8165 kg / 18000 lb
Ballast Weight2948 kg / 6500 lb


Capsize Screening Formula (CSF)1.86
Comfort Ratio27.86
Displacement-Length Ratio (DLR)204.45
Ballast Ratio36.11
Sail Area to Displacement17.89

Above Deck

Estimated Forestay Length15.88 m / 52.12 ft
Reported Sail Area71.07 m² / 765.00 ft²
Total Sail Area71.10 m² / 765.30 ft²
Mainsail Area36.96 m² / 397.80 ft²
I50.00 ft * 15.24 m
J14.70 ft * 4.48 m
P44.20 ft * 13.47 m
E18.00 ft * 5.49 m
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