IRWIN 31

IRWIN 31 photo

Sailboat Specifications


Hull Type:
Keel/Cbrd.
Rigging Type:
Masthead Sloop
LOA:
9.47 m
LWL:
6.78 m
Beam:
2.92 m
S.A. (reported):
41.62 m2
Draft (max):
2.29 m
Draft (min):
1.01 m
Displacement:
4,354 kg
Ballast:
1,724 kg
S.A./Disp.:
15.92
Bal./Disp.:
39.58
Disp./Len.:
389.07
Construction:
FG w/balsa cored deck
Ballast Type:
Lead
First Built:
1968
Builder:
Irwin Yachts (USA)
Designer:
Ted Irwin

Auxiliary Power/Tanks (orig. equip.)

Make:
Universal
Model:
Atomic 4
Type:
Gas
HP:
25
Fuel:
95 L

Sailboat Calculations

S.A./Disp.:
15.92
Bal./Disp.:
39.58
Disp./Len.:
389.07
Comfort Ratio:
29.37
Capsize Screening Formula:
1.81
S#:
1.13

Rig and Sail Particulars

I:
11.28 m
J:
3.69 m
P:
9.75 m
E:
4.27 m
S.A. Fore:
20.80 m2
S.A. Main:
20.81 m2
S.A. Total (100% Fore + Main Triangles)
41.61 m2
S.A./Disp. (calc.):
15.92
Est. Forestay Len.:
11.87 m

Accommodations

Water:
189 L

Notes

TALL (sloop) RIG:
I: 39'
J: 12.1'
P: 34.0'
E: 14.0'
Disp.: 9600 lbs.
Bsl.: 3800 lbs.
Also offered as a yawl.
(info provided by user)

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