SEAWANHAKA ONE-DESIGN (S&S)

SEAWANHAKA ONE-DESIGN (S&S)

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin Keel
Rigging Type: Fractional Sloop
LOA: 31.00 ft / 9.45 m
LWL: 21.00 ft / 6.40 m
S.A. (reported): 357.00 ft² / 33.17 m²
Beam: 6.58 ft / 2.01 m
Displacement: 7,000.00 lb / 3,175 kg
Ballast: 2,850.00 lb / 1,293 kg
Max Draft: 4.50 ft / 1.37 m
Construction: Wood
Ballast Type: Lead
First Built: 1939
Builder: Henry B. Nevins (USA)
Designer: Sparkman & Stephens

Sailboat Calculations

Definitions
S.A. / Displ.: 15.66
Bal. / Displ.: 40.71
Disp: / Len: 337.44
Comfort Ratio: 36.62
Capsize Screening Formula: 1.38
S#: 1.46
Hull Speed: 6.14 kn
Pounds/Inch Immersion: 493.73 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 28.00 ft / 8.53 m
J: 9.50 ft / 2.90 m
P: 33.80 ft / 10.30 m
E: 14.50 ft / 4.42 m
S.A. Fore: 133.00 ft² / 12.36 m²
S.A. Main: 245.05 ft² / 22.77 m²
S.A. Total (100% Fore + Main Triangles): 378.05 ft² / 35.12 m²
S.A./Displ. (calc.): 16.58
Est. Forestay Length: 29.57 ft / 9.01 m

Sailboat Links

Designers: Sparkman & Stephens
Builders: Nevins Inc.
Download Boat Record:

Notes

First 9 boats were commissioned by the Seawanhaka Corinthian YC. (Long Island NY, USA)
Raced as a class into the late 1950's.