Question 366Rules of the Road90% to pass
INLAND ONLY While underway in a harbor you hear a vessel sound a prolonged blast. What does this signal indicate?
AI Explanation
The correct answer is D) is moving from a dock.
According to the U.S. Coast Guard regulations, a prolonged blast (4-6 seconds) from a vessel's whistle or horn while underway in a harbor indicates that the vessel is moving from a dock, pier, or other mooring into the channel. This signal is used to alert other vessels in the vicinity that the vessel is getting underway and entering the navigable waters.
The other options are incorrect because: A) a series of short blasts would indicate the desire to overtake your vessel, B) a single prolonged blast from an anchored vessel would indicate that the vessel is at anchor, and C) a series of short, rapid blasts would indicate that the vessel is backing her engines.
Related Questions
#364 INLAND ONLY You have made your vessel up to a tow and are moving from a pier out into the main channel. Your engines are turning ahead. What whistle signal should you sound?#365 INLAND ONLY Two power-driven vessels are meeting in the situation as shown in illustration D037RR below and will pass within 1/2 mile of each other. What does two short blasts from either vessel mean?#367 INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to overtake the other vessel on her starboard side. What should be your first whistle signal? #368 INLAND ONLY You are on power-driven vessel "A" in a narrow channel as shown in illustration D032RR below. Power-driven vessel "B" sounds two short blasts. What signal should you sound if you are in agreement?#369 INLAND ONLY What whistle signal would you sound if you are overtaking another power-driven vessel and desire to pass on her left or port hand?