Which statement is TRUE concerning a vessel equipped with operational radar?

A vessel equipped with operational radar is indeed expected to use this equipment to obtain early warning of the risk of collision. The use of radar is crucial, especially in situations where visibility is reduced, such as in fog, rain, or at night. While radars provide valuable information regarding other vessels and navigational hazards, it is ultimately the responsibility of the vessel's operator to ensure safe navigation. By utilizing radar, mariners can detect other vessels and obstacles, assess their speeds and courses, and make informed decisions to avoid collisions. This aligns with the International Regulations for Preventing Collisions at Sea (COLREGs), which emphasize the importance of taking all available means to avoid collisions.

The other statements do not accurately reflect the rules pertaining to radar usage. For instance, a vessel is not exempt from using radar merely due to the presence of other boats or the time of day; it should be employed whenever conditions warrant it, regardless of whether the waters are crowded or if it is day or night. Additionally, radar is not an optional piece of equipment for larger vessels over 20 meters; if the vessel is equipped with radar, it is expected to be used to enhance navigational safety.