9.24 x 2.69 m
Length x beam
Sep 13, 2026
IW31
€9.700
place Åkersberga, Sweden
Description
The IW31 is a classic Sparkman & Stephens design from 1977, well-suited for cruising with a Yanmar 21hp engine installed in 2008. The boat has been regularly maintained and features a variety of upgrades, including a new gas stove and a refrigerator. It offers a spacious interior and is currently located in Svinninge.
Specifications
SailboatDataopen_in_new1.65 m
Draft
3,538 kg
Displacement
27
Comfort Ratio
Boat identity
info_outlineModel
IW-31
info_outlineHull Type
Monohull
info_outlineKeel Type
Fin
info_outlineRudder Type
Skeg
info_outlineUnits Built
350
info_outlineAssociation
Half Ton Class, IW-31 owners (in German)
Dimensions & weight
timelineWaterline Length
6.71 m
Rig & sails
info_outlineRig Type
Masthead Sloop
Performance ratios
info_outlineSail Area Displacement
14.57
info_outlineCapsize Screening
1.78
Additional details
info_outlineHull Description
Fin with rudder on skeg
info_outlineBuild Year From
1,968
info_outlineBuild Year To
1,985
info_outlineRig Configuration
masthead-sloop
info_outlineSailing Category
Based on RORC/IOR 1/2 ton proto.. S&S design #1899C. Similar to the SHE 31 by South Hants Engineering (UK).
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