Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Twin Keel
Rigging Type: Masthead Sloop
LOA: 20.00 ft
LWL: 17.50 ft
S.A. (reported): 175.00 ft²
Beam: 7.00 ft
Displacement: 1,800.00 lb
Ballast: 680.00 lb
Max Draft: 2.33 ft
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

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

I: 23.33 ft
J: 5.90 ft
P: 20.67 ft
E: 9.25 ft
S.A. Fore: 68.82 ft²
S.A. Main: 95.60 ft²
S.A. Total (100% Fore + Main Triangles): 164.42 ft²
S.A./Displ. (calc.): 17.82
Est. Forestay Length: 24.06 ft

Sailboat Links

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