IRWIN 31
Hull
Keel/Cbrd.
Rigging
Masthead Sloop
LOA
31.08 ft i.e. 9.47 m
LWL
22.25 ft i.e. 6.78 m
Sail Area
448 ft² i.e. 41.62 m²
Beam
9.58 ft i.e. 2.92 m
Displacement
9600 lb i.e. 4354 kg
Ballast
3800 lb i.e. 1724 kg
Max Draft
7.5 ft i.e. 2.29 m
Construction
Fiberglass w/Balsa core deck
Ballast Type
Lead
First Built
1968
Last Built
N/A
Maker
N/A
Design
Ted Irwin
Make
Universal
Type
Gas
Fuel
50 gals i.e. 189 L
Water
N/A
Headroom
N/A
Blue Water Value
0.36
S.A. / Displ.
15.92
Bal. / Displ.
39.58
Displ. / Length
389.07
Comfort Ratio
29.37
Capsize Screening Formula
1.8
Hull Speed
6.32 kt
Pounds/Inch Immersion
761.63 pounds/inch
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