What are the requirements for spacing and minimum visibility of additional lights on fishing vessels?

The requirements for spacing and minimum visibility of additional lights on fishing vessels are essential for safe navigation and collision avoidance. According to the International Regulations for Preventing Collisions at Sea (COLREGs), the proper spacing of additional lights is specified to ensure that they are sufficiently recognizable to other vessels.

In this context, the correct choice indicates that the additional lights should be spaced 200 meters apart and have a visibility range of 3 nautical miles. This distance between lights ensures that they can be easily distinguished from one another, which helps in identifying the size and type of fishing vessel, and reducing the risk of collision during the night or in conditions with reduced visibility.

The requirement of 3 nautical miles for visibility helps ensure that other vessels have adequate time to perceive the lights from a significant distance, providing an added layer of safety in navigation. This visibility range is important for various operational considerations, including the speed and maneuverability of approaching vessels.

By meeting these specifications, fishing vessels enhance their visibility and safety while at sea, helping to prevent dangerous situations.