Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Twin Keel
Rigging Type: Masthead Sloop
LOA: 20.00 ft / 6.10 m
LWL: 17.50 ft / 5.33 m
S.A. (reported): 175.00 ft² / 16.26 m²
Beam: 7.00 ft / 2.13 m
Displacement: 1,800.00 lb / 816 kg
Ballast: 680.00 lb / 308 kg
Max Draft: 2.33 ft / 0.71 m
Construction: FG
Ballast Type: Lead
First Built: 1963
Builder: Russel Marine Ltd. (UK)
Designer: Peter Stevenson/D.C. Pollard

KLSC Leaderboard

KLSC Leaderboard

Sailboat Calculations

Definitions
S.A. / Displ.: 18.96
Bal. / Displ.: 37.78
Disp: / Len: 149.94
Comfort Ratio: 11.41
Capsize Screening Formula: 2.30
S#: 3.49
Hull Speed: 5.61 kn
Pounds/Inch Immersion: 437.71 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 23.33 ft / 7.11 m
J: 5.90 ft / 1.80 m
P: 20.67 ft / 6.30 m
E: 9.25 ft / 2.82 m
S.A. Fore: 68.82 ft² / 6.39 m²
S.A. Main: 95.60 ft² / 8.88 m²
S.A. Total (100% Fore + Main Triangles): 164.42 ft² / 15.28 m²
S.A./Displ. (calc.): 17.82
Est. Forestay Length: 24.06 ft / 7.33 m

Sailboat Links

Builders: Russell Marine Ltd.
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Notes

The VIVACITY 20 is a redesigned (lengthened) version of the ALACRITY 19.
A fin keel version was also available.