Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 12.44 m
LWL: 9.50 m
S.A. (reported): 68.56 m²
Beam: 3.71 m
Displacement: 7,661 kg
Max Draft: 1.92 m
Construction: FG
First Built: 1978
Builder: Irwin Yachts (USA)
Designer: Ted Irwin

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Fuel: 151 L


Water: 341 L

Sailboat Calculations

S.A. / Displ.: 18.00
Disp: / Len: 248.98
Comfort Ratio: 27.47
Capsize Screening Formula: 1.90
S#: 2.28
Hull Speed: 7.48 kn
Pounds/Inch Immersion: 1,355.42 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 15.24 m
J: 5.03 m
P: 13.41 m
E: 4.51 m
S.A. Fore: 38.32 m²
S.A. Main: 30.25 m²
S.A. Total (100% Fore + Main Triangles): 68.57 m²
S.A./Displ. (calc.): 18.01
Est. Forestay Length: 16.05 m

Sailboat Links

Designers: Ted Irwin
Builders: Irwin Yachts
Associations: Irwin Facebook Group
Irwin Yacht Owners
Download Boat Record:


See IRWIN 39 CITATION which appears very similar.
Fixed keel shoal draft: 4.39'
Keel/cb: BU: 4.25'/BD: 7.0'