USCG USCG ROR
Set 13 • Question #150 of 475
Launch Interactive Practice Room INTERNATIONAL ONLY While underway and in sight of another vessel you put your engines on astern propulsion. Which statement concerning whistle signals is TRUE?
A
You must sound three short blasts on the whistle.
✓ Correct Answer
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.
USCG NMC Regulatory Explanation
COLREGS Rule 34(a) stipulates that power-driven vessels underway and in sight of another, when operating astern propulsion, shall indicate this by sounding three short blasts on the whistle regardless of meeting or crossing situations.
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