In order to back a right-handed, single-screw vessel in a straight line, you will probably need to use __________.

Correct Answer: Option A — some right rudder

A right-handed propeller exerts a strong transverse thrust to port when backing, which pulls the stern to port and the bow to starboard. To maintain a straight line, the master must apply right rudder to counteract this inherent tendency of the propeller to walk the stern to port.