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 __________.

Correct Answer: Option B — the rudder is hard to port and the flanking rudders are hard to port

Flanking rudders are positioned forward of the propellers to direct the propeller wash when the vessel has sternway. To move the stern to port while going astern, the propeller wash must be directed to starboard; therefore, setting both the main and flanking rudders to port achieves this maneuver.