At all USODA events, sailors are required to register using a sail number associated with a boat that they own.  Exceptions may be granted for sailors in Green Fleet and those using club-owned boats.

If you have a used or new boat that you need to register in your name, please use the Boat Registration/Transfer Form to submit the information to USODA.

If you have any questions about the Boat Registration process, do not hesitate to email us at

Why should I register my optimist?
What is an ISAF / World Sailing number?
How do I find out the sail number that goes with my optimist?