Race Start flag sequence.

Flag sequence is Five minutes, Four minues, One minute, Start as shown below:

Flag Meaning Time
Class Flag (I flag) Raised 5 minutes prior to start
Class Flag flying (I flag)

and Preparatory Flag Raised (P flag)

4 minutes prior to start
Prepatory flag lowered and Class Flag (I flag) flaying 1 minute prior to start
All flags down Race is underway