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J/34 built by J Boats Tillotson Pearson (USA) and designed by Johnstone. Her first hull was built in 1985 with an overall lengh of 10.36 m or 34.00 ft long

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J/34 Sailboat Specifications​


Overall Length (LOA) m / ft10.36 m / 34.00 ft
Builder(s)J Boats Tillotson Pearson
BrandJ Boats
CountryUnited States
Hull TypeFin w/spade rudder
Number of Hulls Built25
First Hull Built1985
Last Hull Built1987
Ballast TypeLead
Rigging TypeMasthead Sloop
Ballast Ratio41.98


Overall Length (LOA) 10.36 m / 34.00 ft
Waterline Length (LWL)7.92 m / 26.00 ft
Beam (width)3.41 m / 11.20 ft
Draft1.89 m / 6.20 ft
Light Displacement (MLC) 3674 kg / 8100 lb
Maximum Displacement3674 kg / 8100 lb
Ballast Weight1542 kg / 3400 lb


Capsize Screening Formula (CSF)2.23
Comfort Ratio17.65
Displacement-Length Ratio (DLR)205.74
Ballast Ratio41.98
Sail Area to Displacement20.1

Above Deck

Estimated Forestay Length13.95 m / 45.77 ft
Reported Sail Area46.92 m² / 505.00 ft²
Total Sail Area46.93 m² / 505.20 ft²
Mainsail Area21.18 m² / 228.00 ft²
I44.00 ft * 13.41 m
J12.60 ft * 3.84 m
P38.00 ft * 11.58 m
E12.00 ft * 3.66 m
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