Paragraph 21 of IMO Guidelines for the Onboard Operational Use of Shipborne Automatic Identification Systems (Resolution A. 917(22) (reprinted in MSN 1795) states: “AIS should always be in operation when ships are underway or at anchor.” There are, however, circumstances in which AIS may be switched off when under way or at anchor.
What are the statutory requirements concerning on-board operation of AIS?
