Question 4191Deck General70% to pass
If a tug equipped with flanking rudders is to be turned in a confined circle, when going astern, the stern will move to port the quickest if _______________.
AI Explanation
The correct answer is B) the rudder is hard to port and the flanking rudders are hard to port.
When a tug with flanking rudders is going astern in a confined circle, the stern will move to port the quickest if the main rudder is hard to port and the flanking rudders are also hard to port. This is because the combined force of the rudder and flanking rudders being turned to port will create the greatest amount of turning force, causing the stern to swing to port more quickly.
The other options are incorrect because:
A) Having the flanking rudders turned to starboard would create a turning force in the opposite direction, slowing the port swing of the stern.
C) Having the main rudder amidships would reduce the overall turning force compared to having it hard to port.
D) Having all rudders turned to starboard would create a turning force in the opposite direction, causing the stern to swing to starboard instead of port.
Related Questions
#4189 Sidewise force of the propeller tends to throw a vessel's stern to the right or left, depending on rotation. This force is caused by _______________.#4190 Which type of rudder may lose its effectiveness at angles of 10 or more degrees? #4192 Flanking rudders effect a vessel's heading because of the _______________.#4193 Generally, you can best keep a vessel under steering control when the vessel has _______________.#4194 The pitch of a propeller is a measure of the _______________.