USCG USCG ROR
Set 5 • Question #333 of 475
Launch Interactive Practice Room INTERNATIONAL ONLY Which whistle signal may be sounded by one of two vessels in sight of each other?
A
Four short blasts
B
One prolonged blast
C
One short blast
✓ Correct Answer
D
One short, one prolonged, and one short blast
USCG NMC Regulatory Explanation
Under COLREGS Rule 34(a), a vessel underway and in sight of another when altering course to starboard indicates the maneuver with one short blast. International Rules restrict maneuvering signals exclusively to overtaking or meeting situations in sight, making this specific signal applicable.
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