Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 7.21 m
LWL: 6.10 m
S.A. (reported): 22.67 m²
Beam: 2.41 m
Displacement: 1,542 kg
Ballast: 680 kg
Max Draft: 1.14 m
Construction: FG
First Built: 1971
Last Built: 1978
# Built: 740
Builder: Ranger Yachts (USA)
Designer: Gary Mull

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Sailboat Calculations

S.A. / Displ.: 17.31
Bal. / Displ.: 44.12
Disp: / Len: 189.73
Comfort Ratio: 15.81
Capsize Screening Formula: 2.11
S#: 2.87
Hull Speed: 5.99 kn
Pounds/Inch Immersion: 565.98 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 8.39 m
J: 2.97 m
P: 7.32 m
E: 2.80 m
S.A. Fore: 12.47 m²
S.A. Main: 10.22 m²
S.A. Total (100% Fore + Main Triangles): 22.70 m²
S.A./Displ. (calc.): 17.33
Est. Forestay Length: 8.90 m

Sailboat Links

Designers: Gary Mull
Builders: Ranger Yachts (USA)
Associations: Quarter Ton Class
Products: The Sail Warehouse
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Designed to rate at IOR 1/4 ton(18') level.
Tall rig version first introduced as an option in 1974.