When is a sailboat the stand on vessel in relations?

A sailboat is considered the stand-on vessel in situations where it is sailing with the wind on its starboard side, and another vessel is approaching from the port side. In this case, the sailboat has the right of way and should maintain its course and speed. Additionally, if the sailboat is under sail and the other vessel is a powerboat, the sailboat generally has the right of way unless otherwise specified by local regulations. It's important for both vessels to keep a lookout and take action to avoid collisions.