The Scharnow turn should be used in a man overboard situation only when __________.

Correct Answer: Option D — there has been sufficient time elapsed since the man went over to complete the maneuver

Scharnow turns require substantial elapsed time since the incident, as the maneuver turns the ship back along its reciprocal wake to search backward along the original trackline. Initiating it immediately would place the vessel miles away from the actual incident point.