Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Twin Keel
Rigging Type: Masthead Sloop
LOA: 18.50 ft / 5.64 m
LWL: 17.00 ft / 5.18 m
S.A. (reported): 158.00 ft² / 14.68 m²
Beam: 6.92 ft / 2.11 m
Displacement: 1,500.00 lb / 680 kg
Ballast: 480.00 lb / 218 kg
Max Draft: 1.82 ft / 0.55 m
Construction: Wood/FG
First Built: 1960
Builder: Russell Marine Ltd. /Hurley Marine Ltd.
Designer: Peter Stevenson

Sailboat Calculations

Definitions
S.A. / Displ.: 19.33
Bal. / Displ.: 32.00
Disp: / Len: 136.30
Comfort Ratio: 10.09
Capsize Screening Formula: 2.42
S#: 3.93
Hull Speed: 5.52 kn
Pounds/Inch Immersion: 420.34 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 23.00 ft / 7.01 m
J: 6.20 ft / 1.89 m
P: 20.00 ft / 6.10 m
E: 8.70 ft / 2.65 m
S.A. Fore: 71.30 ft² / 6.62 m²
S.A. Main: 87.00 ft² / 8.08 m²
S.A. Total (100% Fore + Main Triangles): 158.30 ft² / 14.71 m²
S.A./Displ. (calc.): 19.37
Est. Forestay Length: 23.82 ft / 7.26 m

Sailboat Links

Builders: Hurley Marine Ltd.
Russell Marine Ltd.
Associations: Hurley Owners Association
Related Sailboats: VIVACITY 20
Download Boat Record:

Notes

The ALACRITY 18 was originally designed for and built of molded plywood. When it was adapted to fiberglass it became more than a foot longer. There are several versions: the Mk1, MkII, and the Weekender.