The Panama Canal Authority issued a maritime advisory stating that, effective July 1, 2003, vessels over 300 gross tons or over 20 meters LOA must be equipped with an
automatic identification system (AIS) transponder that meets IMO standards. Until January 1, 2005, when the AIS requirement comes fully into effect, portable AIS units may be rented from the Canal Authority. Owners and operators are reminded of the requirement for installation of a Pilot Plug and power source for AIS use by the Canal pilot.