INTERNATIONAL ONLY When vessels are in sight of one another, what does two short blasts from one of the vessels mean?

Correct Answer: Option D — "I am altering my course to port"

Under Rule 34(a) of the International Rules, two short blasts indicate that a vessel is altering her course to port. This signal is mandatory when vessels are in sight of one another and maneuvering in accordance with the Rules to communicate intended actions to other nearby traffic.