2017 – 2020 Rules
The updated racing rules came in to force at the beginning of 2017.
Free of charge, here are three documents on the rules, copied from the ISAF site, which provide all the information that you really need. There is a lot of ‘stuff’ here, so the most important, most relevant part, is Part 2, Rules 10 to 20, and Annex E which deals specifically with radio yacht racing.
Racing Rules – 2017-2020 – Click Here
Racing Rules 2017-2020 – Study Version – Click Here
Racing Rules – Changes for 2017-2020 – Click Here