Navigation General · AIS
Compared with radar, a key advantage of AIS is that it provides a contact's:
- ASea temperature
- BExact hull color
- CIdentity, course, speed, and often navigational status directly, without plotting✓ Correct
- DEngine horsepower
Explanation
AIS broadcasts a vessel's identity (name/MMSI), position, course over ground, speed, heading, and often navigational status and destination, giving immediate target data without a radar plot. It complements but does not replace radar, since not all targets carry AIS.
Authority: IMO/SOLAS AIS carriage requirements
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Related Navigation General questions
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Which of the following items of information is NOT transmitted by a Class A AIS transponder?
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A Class B AIS transponder differs from Class A in that Class B:
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A vessel observes an AIS target on the display whose position does not match the corresponding radar echo. The navigator should:
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Under what circumstance should a vessel's AIS transmitter be switched off or its transmission suspended?
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A vessel's AIS transponder transmits position reports. Under which of the following conditions will a Class A AIS update its dynamic position data most FREQUENTLY?
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A danger of relying solely on AIS for collision avoidance is that: