According to Jeff Johnstone, President of JBoats, the J/105 has overwhelmed the entire 30-37 foot keelboat market. And he is not only speaking about his competitors, but boats in his own line as well. Even though the J/105 was the first sprit boat when it was designed by Rod Johnstone in 1990, it still dominates sixteen years into its production cycle and it is among the top four boats receiving inquiries (among 15 current models) from potential buyers. According to Jeff, their other 30-37 foot boats serve other needs.
Class Rules 2018 (PDF) (1/1/2018)
Key Rules (PDF) (2/1/2011)
Official Interpretations of the rules by the Technical Committee (PDF) (9/10/2010)
Equipment Rules of Sailing 2013-2016 (2016)
Details, Frequently Asked Questions and Guidance on the ISAF Code (12/21/2004)
Specification change for traveller, dodger, and spectra shackles (10/2/2003)