Your twin-screw vessel is moving ASTERN with rudders amidships. The starboard screw suddenly stops turning. Your vessel's head will __________.

Correct Answer: Option C — go to port

With the vessel moving astern and the starboard screw stopping, the remaining backing port screw creates an eccentric thrust vector that walks the stern to starboard, causing the ship's head to swing to port according to standard twin-screw maneuvering principles.