How often does a shipboard AIS unit transmit a vessel's voyage-related data?

How often does a shipboard AIS unit transmit a vessel's voyage-related data?

• A. Every 1 minute
• B. Every 3 minutes
• C. Every 6 minutes
• D. Every 10 minutes

Answer: (C)

The correct choice indicates that a shipboard AIS (Automatic Identification System) unit transmits a vessel's voyage-related data every 6 minutes under normal operation. This interval is established to balance the need for timely information updates with the limitations of bandwidth and the requirement to minimize network congestion. The 6-minute transmission interval helps ensure that the details about the vessel’s position, course, speed, and additional voyage data remain relatively current while avoiding excessive data transmissions that could overwhelm the system or lead to confusion among vessels and shore stations monitoring the information. In certain situations, such as when a vessel is moving at high speeds or is in close proximity to other ships, AIS can transmit more frequently, allowing for a faster exchange of information to enhance situational awareness and improve safety at sea. However, the standard interval during routine operations is every 6 minutes, which emphasizes the importance of both regular updates and the efficient use of communication resources.

The correct choice indicates that a shipboard AIS (Automatic Identification System) unit transmits a vessel's voyage-related data every 6 minutes under normal operation. This interval is established to balance the need for timely information updates with the limitations of bandwidth and the requirement to minimize network congestion.

The 6-minute transmission interval helps ensure that the details about the vessel’s position, course, speed, and additional voyage data remain relatively current while avoiding excessive data transmissions that could overwhelm the system or lead to confusion among vessels and shore stations monitoring the information.

In certain situations, such as when a vessel is moving at high speeds or is in close proximity to other ships, AIS can transmit more frequently, allowing for a faster exchange of information to enhance situational awareness and improve safety at sea. However, the standard interval during routine operations is every 6 minutes, which emphasizes the importance of both regular updates and the efficient use of communication resources.