Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin w/spade rudder
Rigging Type: Fractional Sloop
LOA: 21.00 ft / 6.40 m
LWL: 18.50 ft / 5.64 m
S.A. (reported): 208.00 ft² / 19.32 m²
Beam: 8.00 ft / 2.44 m
Displacement: 1,300.00 lb / 590 kg
Ballast: 600.00 lb / 272 kg
Max Draft: 3.25 ft / 0.99 m
Construction: FG
First Built: 1986
# Built: 150
Builder: Impulse Marine / Johnson Boatworks (USA)
Designer: William Cook

Sailboat Calculations

Definitions
S.A. / Displ.: 28.00
Bal. / Displ.: 46.15
Disp: / Len: 91.66
Comfort Ratio: 6.54
Capsize Screening Formula: 2.93
S#: 6.11
Hull Speed: 5.76 kn
Pounds/Inch Immersion: 528.82 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 23.10 ft / 7.04 m
J: 7.00 ft / 2.13 m
P: 26.00 ft / 7.92 m
E: 9.70 ft / 2.96 m
SPL/TPS: 8.00 ft / 2.44 m
ISP: 23.50 ft / 7.16 m
S.A. Fore: 80.85 ft² / 7.51 m²
S.A. Main: 126.10 ft² / 11.72 m²
S.A. Total (100% Fore + Main Triangles): 206.95 ft² / 19.23 m²
S.A./Displ. (calc.): 27.85
Est. Forestay Length: 24.14 ft / 7.36 m

Sailboat Links

Designers: William Cook
Builders: Johnson Boat Works (USA)
Download Boat Record:

Notes

Also called the Impulse Eagle.
Thanks to 'Warren' for providing updated information.