Question 873Navigation General

70% to pass

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

A AIS can be used to make passing arrangements via ship-to-ship text messaging but a vessel operator is not relieved from the requirement to sound whistle signals or make arrangements via bridge-to-bridge radiotelephone.
B AIS cannot be used to make passing arrangements because the system is not capable of this type of ship-to-ship communications.
C AIS can be used to make passing arrangements via ship-to-ship text massaging relieving a vessel operator from making such arrangements via bridge-to-bridge radiotelephone or signaling intent to pass via whistle signals.
D AIS cannot be used to make passing arrangements because the ship-to-ship text messaging feature is for emergency use only.
AI Explanation

The correct answer is A. AIS can be used to make passing arrangements via ship-to-ship text messaging, but a vessel operator is not relieved from the requirement to sound whistle signals or make arrangements via bridge-to-bridge radiotelephone. AIS provides additional means of communication, but does not replace the standard navigational rules and signals required for safe passing arrangements between vessels. The other options are incorrect because B is false - AIS does have the capability for ship-to-ship text messaging, C is false - AIS text messaging does not relieve the operator from making standard navigational signals, and D is false - the ship-to-ship text messaging feature is not limited to emergency use only.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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