What must you do of if you see another vessel's red and white lights off your starboard bow?

If you see another vessel's red and white lights off your starboard bow, it indicates that the vessel is likely a fishing boat or a vessel engaged in some other activity. You should maintain a safe course and speed while assessing the situation, ensuring that you do not obstruct their path. Additionally, be prepared to take evasive action if necessary to avoid a collision, while following the navigational rules of the road. Always keep a lookout and communicate your intentions if needed.