Question 475Rules of the Road90% to pass
INTERNATIONAL ONLY Which signal is sounded ONLY by a vessel in sight of another?
AI Explanation
The correct answer is A) One short blast on the whistle.
This signal is sounded only by a vessel in sight of another vessel to indicate "I am altering my course to starboard." The International Regulations for Preventing Collisions at Sea (COLREGS) specifically state that this one-short-blast signal is used to communicate a vessel's intended course change when in sight of another vessel.
The other options are incorrect because they do not represent the specific signal used to indicate a change of course to starboard in the presence of another vessel. Option B is a prolonged blast, Option C is a different sequence of blasts, and Option D is four short blasts, which has a different meaning under the COLREGS.
Related Questions
#473 INTERNATIONAL ONLY Which signal is sounded ONLY by a vessel in sight of another and NOT in or near an area of restricted visibility? #474 INTERNATIONAL ONLY Which whistle signal may be sounded by one of two vessels in sight of each other? #476 INTERNATIONAL ONLY Which is TRUE for a light used to signal passing intentions? #477 INTERNATIONAL ONLY Which is TRUE for the light which may be used with a vessel's whistle? #478 INTERNATIONAL ONLY A vessel sounds two short blasts. What does this indicate?