Which of the following statements is TRUE regarding automatic identification systems (AIS)?

Correct Answer: Option A — AIS can be used to make passing arrangements via ship-to-ship text messaging but a vessel operator is not relieved from the requirement to sound whistle signals or make arrangements via bridge-to-bridge radiotelephone.

AIS text messaging provides a supplementary communication tool for passing arrangements, but it does not supersede legal COLREGS requirements for whistle signals and bridge-to-bridge radiotelephone communication.