Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Fractional Sloop
LOA: 10.97 m
LWL: 8.69 m
S.A. (reported): 58.62 m²
Beam: 3.63 m
Displacement: 3,860 kg
Ballast: 1,547 kg
Max Draft: 1.85 m
Construction: FG
Ballast Type: Lead
First Built: 1975
Builder: Holmes (AUS)
Designer: Bruce Farr

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Yanmar
Type: Diesel
Fuel: 110 L


Water: 238 L

Sailboat Calculations

S.A. / Displ.: 24.30
Bal. / Displ.: 40.08
Disp: / Len: 164.11
Comfort Ratio: 15.77
Capsize Screening Formula: 2.34
S#: 4.07
Hull Speed: 7.15 kn
Pounds/Inch Immersion: 1,213.86 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 12.90 m
J: 3.83 m
P: 13.40 m
E: 5.06 m
S.A. Fore: 24.70 m²
S.A. Main: 33.90 m²
S.A. Total (100% Fore + Main Triangles): 58.59 m²
S.A./Displ. (calc.): 24.29
Est. Forestay Length: 13.46 m

Sailboat Links

Designers: Bruce Farr
Builders: Compass Yachts Ltd. (Australia/NZ)
Associations: One Ton Class
Download Boat Record:


From an IOR 1 ton prototype. (1975 - Farr #51 'Prospect of Ponsonby').
Built in both Australia and New Zealand.