..., etc.


====== photos ======

[[http://www.benhall.com/tag/iw-31/|http://www.benhall.com/tag/iw-31/]]

====== docs ======

Original sales materials: {{:iw31:iw_31_brochure.zip|iw_31_brochure.zip}}
====== to-do: ======

The giant to-do list is now [[iw31:to-do|here.]]

====== links: ======

===== Other IW31's =====


<del>http://www.dba.dk/31-fods-havkrydser/id-72263946/</del> \\
http://smhavn.dk/con24.php4 \\
http://iw31.blogspot.com \\
http://www.stormy-iw31.eu/7572/ \\
http://www.stormy-iw31.eu/5881/ \\
http://www.iw31.de/bilder/index.html \\
http://sy-juliette.de/ \\
http://www.halse.de/ \\
http://sparkmanstephens.blogspot.com/2011/02/design-1899-iw-31-class.html \\
http://mermaidscheveningen.webklik.nl/page/ontwerp \\
http://www.iw31-wismar.de/ \\
http://www.iw31.dk/ \\
http://www.iwrig.com/57718625 \\
http://eskapad.wordpress.com/ \\
http://mermaidscheveningen.webklik.nl/page/ontwerp \\
http://www.klassiekepolyesterjachten.nl/page/OverOns \\
http://sailboatdata.com/viewrecord.asp?class_id=5505 \\
http://www.s-and-s-association.org/ \\
http://www.sparkmanstephens.info/doc/5702458zUBmMLGktd9U2RAC4CT7yqTe9.pdf \\
http://www.hinnerk-weiler.de/ \\
http://www.youtube.com/hinnerkWeiler \\
http://www.youtube.com/user/ottorino43 (commented on a video that he owns an IW 31) \\
http://www.youtube.com/user/essen222 (commented on a video that he owns an IW 31) \\
https://picasaweb.google.com/116970321897372292619/IW31Havskum# \\

===== sailing =====


http://www.gotakanal.se/sv/Gotakanal/ \\
[[http://www.skipperguide.de/wiki/Hallands_Väderö|http://www.skipperguide.de/wiki/Hallands_Väderö]] \\

===== equipment =====

[[iw31:iw31:equipment|Equipment/wish-list/suppliers]]

===== Other Notes & Links =====

[[iw31:iw31:notes|Odd-ball notes & links]]

[[:iw31:weather_fax|Weather Fax]]


  * mast length is 12.5m

I'm not entirely certain I've put in the correct numbers for all the calculations correctly, but here are our general performance & stability numbers (from [[http://www.sailingcourse.com/keelboat/design_winds.htm|sailingcourse.com]]:

  * The maximum speed of the boat is: 6.29 knots (22ft. at water line)
  * The Sail Area Displacement Ratio is: 15.57. The sailboat is a cruiser-racer.
  * The Displacement to Length Ratio is: 332.75. The sailboat is a heavy displacement cruiser.
  * The Motion Comfort Ratio is: 27.68
  * The Stability of the boat is: 1.74 (Stability is predicted !!) (anything less than 2 is considered stable)
  * The screening stability value of the boat is: 14.81
  * Angle of Vanishing Stability is 193.09 (estimated a 0.7m draft of hull without keel, will try to measure this season) (anything above 120 is good, above 140 is better)
  * Ballast Displacement Ratio: %44

These are all pretty good values for a 31 foot boat I might add.
..., etc.

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