IRWIN 31

IRWIN 31 photo

Sailboat Specifications


Hull Type:
Keel/Cbrd.
Rigging Type:
Masthead Sloop
LOA:
31.08 ft
LWL:
22.25 ft
Beam:
9.58 ft
S.A. (reported):
448.00 ft2
Draft (max):
7.50 ft
Draft (min):
3.33 ft
Displacement:
9,600 lb
Ballast:
3,800 lb
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:
25 gals

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:
37.00 ft
J:
12.10 ft
P:
32.00 ft
E:
14.00 ft
S.A. Fore:
223.85 ft2
S.A. Main:
224.00 ft2
S.A. Total (100% Fore + Main Triangles)
447.85 ft2
S.A./Disp. (calc.):
15.92
Est. Forestay Len.:
38.93 ft

Accommodations

Water:
50 gals

Sailboat Links

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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