Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 9.13 m
LWL: 7.75 m
S.A. (reported): 36.05 m²
Beam: 3.15 m
Displacement: 3,175 kg
Ballast: 1,238 kg
Max Draft: 1.40 m
Construction: FG
Ballast Type: Iron
First Built: 1981
Last Built: 1984
Builder: Cal Boats (USA)
Designer: Ron Holland

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Universal
Type: Diesel
HP: 11
Fuel: 42 L


Water: 79 L

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: 11.58 m
J: 3.62 m
P: 9.91 m
E: 3.05 m
S.A. Fore: 20.97 m²
S.A. Main: 15.10 m²
S.A. Total (100% Fore + Main Triangles): 36.07 m²
S.A./Displ. (calc.): 17.03
Est. Forestay Length: 12.13 m
Mast Height from DWL: 12.88 m

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?)