What is the maximum distance in yards that a vessel must be positioned from a fixed aid, according to regulations?

The correct answer is based on regulatory requirements that dictate the safe navigation distance of vessels from fixed aids to navigation, such as buoys or lighthouses. The regulations specify that vessels must remain at least 3 yards away from these aids to ensure the safety of both the vessel and the fixed aid itself.

This distance helps to prevent potential damage to the aids and reduces the risk of collisions, which can be hazardous for navigation in waterways. It also considers the necessary space for the operation of the aid and the safety of the crew aboard vessels in the vicinity. By maintaining this minimal distance, vessels can navigate safely while respecting the operational integrity of fixed aids.

Other distances provided in the options do not meet this safety criteria or are below the regulatory requirement, thus making them inappropriate in this context.