Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 29.96 ft
LWL: 25.42 ft
S.A. (reported): 388.00 ft²
Beam: 10.33 ft
Displacement: 7,000.00 lb
Ballast: 2,730.00 lb
Max Draft: 4.58 ft
Construction: FG
Ballast Type: Iron
First Built: 1981
Last Built: 1984
Builder: Cal Boats (USA)
Designer: Ron Holland

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Auxiliary Power/Tanks (orig. equip.)

Make: Universal
Type: Diesel
HP: 11
Fuel: 11 gals


Water: 21 gals

Sailboat Calculations

S.A. / Displ.: 17.02
Bal. / Displ.: 39.00
Disp: / Len: 190.25
Comfort Ratio: 18.01
Capsize Screening Formula: 2.16
S#: 2.83
Hull Speed: 6.76 kn
Pounds/Inch Immersion: 938.26 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 38.00 ft
J: 11.88 ft
P: 32.50 ft
E: 10.00 ft
S.A. Fore: 225.72 ft²
S.A. Main: 162.50 ft²
S.A. Total (100% Fore + Main Triangles): 388.22 ft²
S.A./Displ. (calc.): 17.03
Est. Forestay Length: 39.81 ft
Mast Height from DWL: 42.25 ft

Sailboat Links

Designers: Ron Holland
Builders: Jensen Marine/Cal Boats
Mariner Construções Náuticas Ltd. (BRA)
Associations: Half Ton Class
Related Sailboats: RUSH 31 (JEANNEAU)
Download Boat Record:


Based on a Ron Holland designed IOR 1/2 ton racer, the 9.2 was built under license from Jeanneau, which sold the boat in Europe as the RUSH 31. (RUSH, RUSH GTE w/deep keel,RUSH REGATTE w/lead keel and RUSH ROYAL. (Jeanneau was owned by the same parent company at the time.)
Also similar to the NICHOLSON 1/2 TON.
Also CAL 9.2R version with 2 spreader rig and deeper lead keel-draft: 5.58'.
Yet another version was built in Brazil. (MARINER 31?)