BOTH INTERNATIONAL & INLAND A vessel displaying the shape shown in illustration D010RR below is which of the following?

Correct Answer: Option A — has a tow that exceeds 200 meters in length

Rule 24(c) requires a vessel engaged in a towing operation that severely restricts her ability to deviate from her course to display a diamond shape. This shape informs other mariners that the towing vessel and her tow are constrained, necessitating extra caution and adherence to the hierarchy of vessels.