Class Rules 2023 (PDF) (1/1/2023)
J/105 Class Guide to Compliance with the Class Rules (04/02/2021)
Equipment Rules of Sailing 2013-2016 (2016)
Details, Frequently Asked Questions and Guidance on the ISAF Code (10/15/2023)
Specification change for traveller, dodger, and spectra shackles (10/2/2003)


History of the rule changes between 1996 and 2012 (2/1/2012)
Diagram of the headstay measurement technique
ISAF Sailors’ Classification Code

Official Keel and Rudder Offsets

Rudder Offsets (pdf)
Shoal Keel Offsets (pdf)