Question

While underway, automatic identification systems (AIS) broadcast all of the following information every 1 to 10 seconds EXCEPT the __________.

a) Vessel's course over ground
b) Vessel's speed over ground
c) Vessel's last port of call
d) Vessel's MMSI number

Answer 1

Automatic identification systems broadcast the vessel's course and speed over ground as well as the MMSI number but do not transmit the vessel's last port of call every 1 to 10 seconds.

Step-by-step explanation:

While underway, automatic identification systems (AIS) broadcast various pieces of information to ensure maritime safety. This includes the vessel's course over ground, speed over ground, and the vessel's Maritime Mobile Service Identity (MMSI) number

However, the AIS does not broadcast the vessel's last port of call every 1 to 10 seconds. That type of information is generally not critical for the real-time purposes of AIS, which is focused on the current navigational status of the vessel to prevent collisions and facilitate maritime traffic control.