751. Your vessel is running in a following sea. Which term defines the motion your vessel is experiencing?

Yawing is the correct answer; a following sea causes a vessel to swing its bow alternately to port and starboard due to overtaking waves impacting the stern. Yawing describes this oscillating motion about the vessel's vertical axis, unlike heaving to, which is a maneuver, pounding, which is a vertical impact, or reduced speed, which is an operating condition.