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ROCK 20

Heinz-Jurgen Sass Birka Marine (FIN) 1968-1975 200 built

Dimensions

LOA: 23.5 ft
LWL: 19.5 ft
Beam: 7.4 ft
Max Draft: 3.9 ft
Min Draft: -

Weight & Ballast

Displacement: 3858.0 lbs
Ballast: 1323.0 lbs
Bal./Disp.: 34.3%

Performance

SA/Disp.: 14.1
Disp./Length: 231.6
Comfort: 19.9
Capsize Screening: 1.9
Hull Speed: 5.9 kts

Sail Plan

Sail Area: 217.0 sq ft
I: 25.6
J: 9.0
P: 23.2
E: 8.7

Engine & Tanks

Engine
Model
HP
Fuel: 0
Water: 0

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