When a sailboat over takes a powerboat which vessel is the stand on?

When a sailboat overtakes a powerboat, the powerboat is the stand-on vessel. According to maritime right-of-way rules, the stand-on vessel is required to maintain its course and speed, while the give-way vessel—in this case, the sailboat—must take action to avoid a collision. The sailboat should ensure it passes safely without endangering the powerboat.