USCG USCG ROR
Set 4 • Question #322 of 475
Launch Interactive Practice Room INLAND ONLY While underway and in sight of another vessel a mile ahead you put your engines on astern propulsion. Which statement concerning whistle signals is TRUE?
A
You must sound three short blasts on the whistle.
B
You must sound one blast if backing to starboard.
C
You must sound whistle signals only if the vessels are meeting.
D
You need not sound any whistle signals.
✓ Correct Answer
USCG NMC Regulatory Explanation
Under 33 CFR 83.34(a) (Inland Rules), maneuvering and warning signals involving astern propulsion are required only when vessels are in sight of one another and meeting or crossing, not when separated by a mile without risk.
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