Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Keel/Cbrd.
Rigging Type: Staysail Ketch
LOA: 19.76 m
LWL: 16.76 m
S.A. (reported): 176.05 m²
Beam: 5.28 m
Displacement: 35,607 kg
Ballast: 10,659 kg
Max Draft: 1.75 m
Construction: FG
First Built: 1981
Builder: Irwin Yachts (USA)
Designer: Ted Irwin

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Perkins
Model: 853H
Type: Diesel
HP: 240
Fuel: 2,347 L


Water: 3,596 L

Sailboat Calculations

S.A. / Displ.: 16.62
Bal. / Displ.: 29.94
Disp: / Len: 210.64
Comfort Ratio: 46.91
Capsize Screening Formula: 1.62
S#: 2.44
Hull Speed: 9.94 kn
Pounds/Inch Immersion: 3,405.71 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 23.01 m
J: 8.08 m
P: 21.03 m
E: 7.01 m
PY: 4.42 m
EY: 4.27 m
S.A. Fore: 92.94 m²
S.A. Main: 73.72 m²
S.A. Total (100% Fore + Main Triangles): 166.66 m²
S.A./Displ. (calc.): 15.73
Est. Forestay Length: 24.39 m

Sailboat Links

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


LOA w/bowsprit: 72.0'
Thanks to '7THHEAVEN' for providing corrections.