Northern Territory Consolidated Regulations Northern Territory Consolidated Regulations(1) Where a licensed pilot is required for a ship, the master of the ship shall cause the following signals to be made to denote that a licensed pilot is required:
(a) by day, International Code Signal "G"; and
(b) by night, International Code Flash "G".
(2) Where, by day, a licensed pilot is on board a ship, the master of the ship shall cause International Code Signal "H" to be made.
(3) Where a ship that is an exempt ship under regulation 16 is about to enter, or is moving within, a compulsory pilotage area by day, the master of the ship shall cause International Code Signal Numeral Pennant "O" to be made.