When a distant AIS target first shows up on the radar, which information is normally displayed first?

When a distant AIS target first shows up on the radar, which information is normally displayed first?

• A. The ship's name
• B. The MMSI
• C. The target's course
• D. The target's speed

Answer: (B)

When a distant AIS target first appears on the radar, the designated first piece of information typically displayed is the Maritime Mobile Service Identity (MMSI) number. The MMSI is a unique nine-digit number assigned to each vessel that uses AIS (Automatic Identification System). This identifier allows for the quick recognition and tracking of vessels, especially in a maritime environment where there may be multiple ships in close proximity. The immediate display of the MMSI helps mariners differentiate between targets without necessarily needing the ship's name or other details, which can take additional time to process. Once the AIS target is fully processed and additional information is available, the ship's name, course, and speed may become visible. However, the initial and most crucial identification provided upon detection is the MMSI, as it is fundamental for safety and situational awareness in navigation.

When a distant AIS target first appears on the radar, the designated first piece of information typically displayed is the Maritime Mobile Service Identity (MMSI) number. The MMSI is a unique nine-digit number assigned to each vessel that uses AIS (Automatic Identification System). This identifier allows for the quick recognition and tracking of vessels, especially in a maritime environment where there may be multiple ships in close proximity.

The immediate display of the MMSI helps mariners differentiate between targets without necessarily needing the ship's name or other details, which can take additional time to process. Once the AIS target is fully processed and additional information is available, the ship's name, course, and speed may become visible. However, the initial and most crucial identification provided upon detection is the MMSI, as it is fundamental for safety and situational awareness in navigation.