Which of the following statements is TRUE regarding... - USCG Navigation General

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

A AIS is a short-range VHF-FM system that automatically broadcasts a vessel's position, course, speed and other safety related information to all those with similar equipment in the area.

B AIS is a short-range 3 cm X-band radar system that automatically sends a vessel's position, course, speed and other safety related information to all those with similar equipment within the area.

C AIS is a one-way centrally managed system that requires the local VTS to send commands to instruct each vessel to broadcast position, course, speed and other safety related information to all those with similar equipment in the area.

D AIS is a global tracking system that relies upon INMARSAT C service to communicate vessel position, course, speed and other safety related information to all those with similar equipment in the area.

AI Explanation

The correct answer is A. AIS is a short-range VHF-FM system that automatically broadcasts a vessel's position, course, speed and other safety-related information to all those with similar equipment in the area. This is the key function of AIS, which is a self-contained, automated system that does not require a centralized control or management. The other options are incorrect because B describes a radar system rather than VHF-FM, C describes a one-way centrally managed system which is not how AIS works, and D refers to a global tracking system using INMARSAT C, which is not the technology used for AIS.

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Question 859Navigation General

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

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