From: Transport Canada Navigation Safety & Radiocommunications Overview Navigation Safety Radiocommunications Regulatory Framework and Guidelines IMO GMDSS FAQ Related Sites AIS Contact Us Boat U.S. DSC Canadian Coast Guard - Marine Communications and Traffic Services ( MCTS ) information page Canadian EPIRB Registry Canadian MMSI database (National Maritime Information Database) IMO GMDSS FAQ International Telecommunication Union's ( ITU MMSI Radio Aids to Marine Navigation ( RAMN ) Safety and Distress Radiotelephone Procedures ( TP 9878) US Coast Guard Maritime Communications US NIMA
