Iw 31


The Iw 31 is a 30.33ft masthead sloop designed by Sparkman & Stephens and built in fiberglass by IW-Varvet (SWE) between 1968 and 1985.

350 units have been built.

The Iw 31 is a heavy sailboat which is slightly under powered. It is very stable / stiff and has an excellent righting capability if capsized. It is best suited as a coastal cruiser.

Iw 31 for sale elsewhere on the web:

Main features


Model Iw 31
Length 30.33 ft
Beam 8.83 ft
Draft 5.42 ft
Country Sweden (Europe)
Estimated price $ 0 ??

Login or register to personnalize this screen.

You will be able to pin external links of your choice.

See how Sailboatlab works in video

Ratios


Sail area / displ. 14.57
Ballast / displ. 43.59 %
Displ. / length 327.02
Comfort ratio 27.03
Capsize 1.78

Hull


Hull type Monohull fin keel with rudder on skeg
Construction Fiberglass
Waterline length 22 ft
Maximum draft 5.42 ft
Displacement 7800 lbs
Ballast 3400 lbs
Hull speed 6.29 knots

We help you build your own hydraulic steering system - Lecomble & Schmitt

Rigging


Rigging Masthead Sloop
Sail area (100%) 357 sq.ft
Air draft 0 ft ??
Sail area fore 209.79 sq.ft
Sail area main 147.26 sq.ft
I 36.74 ft
J 11.42 ft
P 31.50 ft
E 9.35 ft

Engine


Nb engines 1
Total power 10 HP
Fuel capacity 0 gals

Accommodations


Water capacity 0 gals
Headroom 0 ft
Nb of cabins 0
Nb of berths 0
Nb heads 0

Builder data


Builder IW-Varvet (SWE)
Designer Sparkman & Stephens
First built 1968
Last built 1985
Number built 350

Other photos