The latest version of the IOM Class rules have now been published and take effect March 1st, 2015.
The only changes in the 2015 edition of the IOM Class Rules are those related to two emergency rule changes in 2014 dealing with tell tales and head sail topping lift restraint line(s). To read or download the latest version of the rules, click on the following link http://www.iomclass.org/class-rules/ and then click on the IOM Class Rules 2015 link at the top of the page.
To download the various measurement certification forms and check lists and rig forms, scroll to the bottom of the Class Rues page and click on the appropriate items.
The Class Rules Page also has links to rules interpretations going back to 2003.