USCG USCG ROR
Set 1 • Question #17 of 475
Launch Interactive Practice Room INLAND ONLY What is the required whistle signal for a power-driven vessel leaving a dock or berth?
A
One short blast
B
One prolonged blast
✓ Correct Answer
C
Two short blasts
D
Two prolonged blasts
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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