IRWIN 31 CITATION

IRWIN 31 CITATION
IRWIN 31 CITATION

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 9.53 m
LWL: 8.08 m
S.A. (reported): 44.04 m²
Beam: 3.35 m
Displacement: 4,218 kg
Ballast: 1,542 kg
Max Draft: 1.83 m
Construction: FG
First Built: 1983
Builder: Irwin Yachts (USA)
Designer: Ted Irwin

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Yanmar
Type: Diesel
HP: 15

Sailboat Calculations

Definitions
S.A. / Displ.: 17.21
Bal. / Displ.: 36.56
Disp: / Len: 223.10
Comfort Ratio: 21.11
Capsize Screening Formula: 2.10
S#: 2.47
Hull Speed: 6.90 kn
Pounds/Inch Immersion: 1,041.56 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 12.80 m
J: 3.66 m
P: 11.28 m
E: 3.66 m
S.A. Fore: 23.41 m²
S.A. Main: 20.62 m²
S.A. Total (100% Fore + Main Triangles): 44.04 m²
S.A./Displ. (calc.): 17.21
Est. Forestay Length: 13.31 m
Mast Height from DWL: 14.05 m

Sailboat Links

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

Notes

Keel/cb version:
BU: 4.0' BD: 8.92'.
Shallow draft fixed keel: 4.0'