While underway vessels equipped with an automatic identification system (AIS) are required to transmit specific information at varying intervals. What information contained in a class A unit broadcast is only required to be transmitted every six minutes?

Correct Answer: Option D — the name of the vessel

Class A AIS transponders transmit static and voyage-related data, safety messages, and dynamic information at varied intervals. Per 46 CFR and international standards, static data such as the vessel's name and call sign transmits every six minutes.