When approaching Boat B head-on in darkness or reduced visibility?

When approaching Boat B head-on in darkness or reduced visibility, both vessels should adhere to navigation rules that require them to keep a safe distance and maintain proper lookout. Each boat should sound their horn to signal their presence, and they must be prepared to take evasive action as necessary. It's crucial to operate at a safe speed to allow for adequate reaction time and to ensure that navigation lights are clearly visible to avoid collisions. Always prioritize communication and situational awareness to enhance safety.