starting sequence

a good description of a starting sequence (from berkeley midwinters sailing instructions)

Warning                      5          11:55    Raise “A”         Up Course Flag

                                                                       Preparatory                  4          11:56    Raise “P” flag, “I” flag

                                                                       One Minute                  1          11:59    Drop “P”, “I”   Drop Course flag

                                                                        Start                             0          12:00    Drop “A”

Warning, Prep and one minute get a horn
Start gets a gun