USCG USCG ROR
Set 12 • Question #93 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND Five or more short blasts on a vessel's whistle indicates that she is __________.
A
in doubt that another vessel is taking sufficient action to avoid a collision
✓ Correct Answer
B
altering course to starboard
C
altering course to port
D
the stand-on vessel and will maintain course and speed
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'Five or more short blasts on a vessel's whistle indicates that she is', the correct requirement is: 'in doubt that another vessel is taking sufficient action to avoid a collision'. This standard ensures clear navigational intent and collision avoidance.
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