The condition where a MODU on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in __________.

Correct Answer: Option D — step

Riding in step means the tug and towed MODU occupy corresponding positions on adjacent wave crests simultaneously. This synchronization minimizes severe shock loads on the towline and towing gear caused by out-of-phase wave action.