What should a powerboat do if it's approaching the starboard side I have a sailboat in darkness reduced visibility?

In reduced visibility, the powerboat should maintain a safe speed and be prepared to take evasive action. According to navigation rules, the powerboat should give way to the sailboat, as sailboats under sail have the right of way. The powerboat should sound its horn to signal its presence and ensure the sailboat is aware of its approach. It may also consider using radar or other navigational aids to enhance visibility and ensure safe passage.