QUARTER TON CLASS

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 23.00 ft / 7.01 m
LWL: 18.00 ft / 5.49 m
S.A. (reported): 270.00 ft² / 25.08 m²
Beam: 8.50 ft / 2.59 m
Displacement: 3,000.00 lb / 1,361 kg
Ballast: 1,200.00 lb / 544 kg
Max Draft: 4.50 ft / 1.37 m
Construction: FG
First Built: 1967
Builder: Various
Designer: Various

Sailboat Calculations

Definitions
S.A. / Displ.: 20.82
Bal. / Displ.: 40.00
Disp: / Len: 229.64
Comfort Ratio: 13.74
Capsize Screening Formula: 2.36
Hull Speed: 5.69 kn
Pounds/Inch Immersion: 546.69 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

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Notes

Dimensions only approximate since this a development class.
Recent history for 'level rating' competition:

1967-1970 RORC <15.0'
1971-1978 IOR <18.0'
1979-1996 IOR <18.55'
Beginning in 2005, new class in the UK, NED (and elsewhere) under IRC.