TRIANGLE ONE-DESIGN

TRIANGLE ONE-DESIGN
TRIANGLE ONE-DESIGN

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin Keel
Rigging Type: Fractional Sloop
LOA: 28.50 ft / 8.69 m
LWL: 18.50 ft / 5.64 m
S.A. (reported): 407.00 ft² / 37.81 m²
Beam: 7.50 ft / 2.29 m
Displacement: 5,017.00 lb / 2,276 kg
Ballast: 2,500.00 lb / 1,134 kg
Max Draft: 4.75 ft / 1.45 m
Construction: Wood
Ballast Type: Lead
First Built: 1926
Last Built: 1933
# Built: 60
Builder: James Graves (USA)
Designer: John Alden

KLSC Leaderboard

KLSC Leaderboard

Sailboat Calculations

Definitions
S.A. / Displ.: 22.29
Bal. / Displ.: 49.83
Disp: / Len: 353.74
Comfort Ratio: 24.62
Capsize Screening Formula: 1.75
S#: 1.80
Hull Speed: 5.76 kn
Pounds/Inch Immersion: 495.77 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 22.80 ft / 6.95 m
J: 8.25 ft / 2.51 m
P: 37.50 ft / 11.43 m
E: 19.20 ft / 5.85 m
S.A. Fore: 94.05 ft² / 8.74 m²
S.A. Main: 360.00 ft² / 33.45 m²
S.A. Total (100% Fore + Main Triangles): 454.05 ft² / 42.18 m²
S.A./Displ. (calc.): 24.86
Est. Forestay Length: 24.25 ft / 7.39 m

Sailboat Links

Designers: John G. Alden
Builders: Graves Yacht Yard (USA)
Download Boat Record:

Notes

Alden design #278. Originally called the MARBLEHEAD CLASS, the JAMESTOWN CLASS.
Of 60 built, a few have been restored and are still sailing (2005).
(According to 'John G. Alden and his yacht designs' only around 14 were built.)