When operating a power-driven vessel, which type of vessel must you give way to?

When operating a power-driven vessel, it is essential to understand that you must give way to any vessel not under command. A vessel not under command is defined as one that is unable to maneuver as required by the navigation rules due to exceptional circumstances, such as an engine failure or equipment malfunction. This situation places the vessel in a condition where it cannot safely navigate or take action to avoid a collision.

The principle behind giving way to vessels not under command is rooted in ensuring safety on the waterway. Such vessels may pose a hazard to nearby vessels, as they cannot respond to changes in navigation or avoid obstacles. As a result, maintaining situational awareness and yielding to these vessels helps prevent accidents and promotes safer navigation overall.

The other options present scenarios in which giving way might not be necessary or applicable as a priority. For instance, while a sailing vessel does have certain rights on the water, the situation can vary based on the specific circumstances and the vessels' navigation rules. Thus, the emphasis on giving way to vessels not under command reflects the need for caution in situations where a vessel is unable to take action to avoid danger.