Definitions for "STAND-ON VESSEL"
The boat that has the right of way in a crossing or overtaking situation; the privileged vessel.
The vessel that must maintain its course and speed unless it becomes apparent that the give-way boat is not taking appropriate action; if you must take action, do not turn toward the give-way boat or cross in front of it.
That vessel which continues its course in the same direction at the same speed during a crossing or overtaking situation, unless a collision appears imminent. (Was formerly called "the privileged vessel.")