What to do if you see another vessels red and white lights off your starboard?

If you see another vessel's red and white lights off your starboard side, it indicates that the other vessel is a power-driven boat underway and is either crossing your path or overtaking you. You should maintain your course and speed, as the other vessel is likely to give way. However, keep a close watch on their movements to ensure safe navigation. If there is any doubt about their intentions, be prepared to take evasive action if necessary.