USCG USCG ROR
Set 3 • Question #277 of 475
Launch Interactive Practice Room INLAND ONLY A power-driven vessel, when leaving a dock or berth, must sound what signal?
A
Three short blasts
B
A long blast
C
A prolonged blast
✓ Correct Answer
D
No signal is required.
USCG NMC Regulatory Explanation
Under Inland Rule 34(g), a power-driven vessel leaving a dock or berth must sound one prolonged blast (4 to 6 seconds) on her whistle as a warning signal to other vessels navigating nearby.
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