USCG USCG ROR
Set 2 • Question #259 of 475
Launch Interactive Practice Room INLAND ONLY A vessel leaving a dock or berth must sound a prolonged blast of the whistle only if __________.
A
other vessels can be seen approaching
B
she is a power-driven vessel
✓ Correct Answer
C
visibility is restricted
D
her engines are going astern
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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