Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 14.52 m
LWL: 12.22 m
S.A. (reported): 109.16 m²
Beam: 4.74 m
Displacement: 15,640 kg
Ballast: 7,100 kg
Max Draft: 2.51 m
Construction: FG
Ballast Type: Lead
First Built: 1988
Builder: Jonmeri (FIN)
Designer: Jorma Nyman/Karl-Johan Stråhlmann

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Volvo Penta
Model: TMB 31
Type: Diesel
Fuel: 598 L


Water: 757 L

Sailboat Calculations

S.A. / Displ.: 17.82
Bal. / Displ.: 45.40
Disp: / Len: 239.08
Comfort Ratio: 32.60
Capsize Screening Formula: 1.91
S#: 2.36
Hull Speed: 8.48 kn
Pounds/Inch Immersion: 2,225.49 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 20.00 m
J: 5.75 m
P: 18.41 m
E: 5.61 m
S.A. Fore: 57.49 m²
S.A. Main: 51.63 m²
S.A. Total (100% Fore + Main Triangles): 109.12 m²
S.A./Displ. (calc.): 17.81
Est. Forestay Length: 20.81 m

Sailboat Links

Designers: Karl-Johan Stråhlmann
Builders: Jonmeri Yachts
Maestro Boats (FIN)
Download Boat Record:


Updated by Stråhlmann. Several layouts available.
A version without the 'Deck Salon' is called the JONMERI 482.