A twin-screw vessel with a single rudder is making headway. The engines are full speed ahead. There is no wind or current. Which statement is FALSE?

Correct Answer: Option D — Turning response by use of the rudder only is greater than on a single-screw vessel.

Twin-screw vessels with a single centerline rudder experience complex wake interactions. Because the rudder operates directly in the race of twin screws, turning response using the rudder alone is typically less efficient or comparable, not greater, than on a single-screw vessel.