Sailboat Specifications
DefinitionsHull Type: | Fin w/spade rudder |
Rigging Type: | Masthead Sloop |
LOA: | 40.90 ft / 12.47 m |
LWL: | 34.00 ft / 10.36 m |
S.A. (reported): | 728.00 ft² / 67.63 m² |
Beam: | 13.20 ft / 4.02 m |
Displacement: | 14,100.00 lb / 6,396 kg |
Ballast: | 6,600.00 lb / 2,994 kg |
Max Draft: | 7.42 ft / 2.26 m |
Construction: | balsa sandwich hull & deck w/carbon |
Ballast Type: | Lead |
First Built: | 1984 |
Last Built: | 1987 |
# Built: | 15 |
Builder: | J Boats Tillotson Pearson (USA) |
Designer: | Rod Johnstone |
Sailboat Calculations
DefinitionsS.A. / Displ.: | 20.03 |
Bal. / Displ.: | 46.81 |
Disp: / Len: | 160.15 |
Comfort Ratio: | 19.44 |
Capsize Screening Formula: | 2.19 |
S#: | 3.63 |
Hull Speed: | 7.81 kn |
Pounds/Inch Immersion: | 1,603.61 pounds/inch |
Rig and Sail Particulars
HELPI: | 52.11 ft / 15.88 m |
J: | 15.60 ft / 4.75 m |
P: | 46.00 ft / 14.02 m |
E: | 14.00 ft / 4.27 m |
S.A. Fore: | 406.46 ft² / 37.76 m² |
S.A. Main: | 322.00 ft² / 29.91 m² |
S.A. Total (100% Fore + Main Triangles): | 728.46 ft² / 67.68 m² |
S.A./Displ. (calc.): | 20.04 |
Est. Forestay Length: | 54.39 ft / 16.58 m |
Sailboat Links
Designers: | Rod Johnstone |
Builders: | J Boats |
Associations: | One Ton Class |
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Notes
Conceived as IOR 1 ton level racer. Also available with a fractional rig.
The masthead version usually carried more ballast.
Dimensions for fractional rig:
I: 48.00' / 14.63m
J: 13.70' / 4.18m
P: 54.30' / 16.55m
E: 19.00' / 5.79m
SA(Fore.): 328.80 ft2 / 30.55 m2
SA(Main): 515.85 ft2 / 47.92 m2
Sail Area (100% fore+main triangles): 844.65 ft2 / 78.47 m2
The masthead version usually carried more ballast.
Dimensions for fractional rig:
I: 48.00' / 14.63m
J: 13.70' / 4.18m
P: 54.30' / 16.55m
E: 19.00' / 5.79m
SA(Fore.): 328.80 ft2 / 30.55 m2
SA(Main): 515.85 ft2 / 47.92 m2
Sail Area (100% fore+main triangles): 844.65 ft2 / 78.47 m2
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