Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 11.20 m
LWL: 9.05 m
S.A. (reported): 71.60 m²
Beam: 3.54 m
Displacement: 7,800 kg
Ballast: 3,250 kg
Max Draft: 1.90 m
Min Draft: 1.60 m
Construction: FG
First Built: 1980
Builder: Breehorn
Designer: Dick Koopmans Sr..

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Yanmar
Model: 3JH4E
Type: Diesel; Saildrive
HP: 40
Fuel: 200 L


Water: 200 L

Sailboat Calculations

S.A. / Displ.: 18.58
Bal. / Displ.: 41.67
Disp: / Len: 293.32
Comfort Ratio: 31.90
Capsize Screening Formula: 1.80
S#: 1.73
Hull Speed: 7.30 kn
Pounds/Inch Immersion: 1,231.65 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 14.70 m
J: 4.90 m
P: 13.33 m
E: 3.90 m
S.A. Fore: 36.03 m²
S.A. Main: 26.00 m²
S.A. Total (100% Fore + Main Triangles): 62.03 m²
S.A./Displ. (calc.): 16.09
Est. Forestay Length: 15.50 m
Mast Height from DWL: 16.43 m

Sailboat Links

Designers: Dick Koopmans
Builders: Breehorn (NL)
Download Boat Record:


Thanks to Aike van der Hoeff for providing information on this yacht.