Are there different ranks for Referees?

Yes, there are three ranks for Referees; Candidates, are people interested in becoming a Referee. Assistant Referees, are licensed referees, they can be part of a Jury and officiate at any station, but cannot act as a depuity or chief Referee. Referees are fully qualified, like an Assistant Referee, but can also act as a Chief or Deputy Chief for a regatta.  

There are also Clinicians required to be full Referees and voted on by the Committee.