What is the minimum range of a stern light on vessels less than 50 metres?

The minimum range of a stern light on vessels that are less than 50 meters is indeed 2 miles. This requirement is established in the COLREGs (International Regulations for Preventing Collisions at Sea), which specify the lighting and shapes to be displayed by vessels to ensure safe navigation and to reduce the risk of collisions.

According to the rules, the stern light must be visible from a distance of at least 2 nautical miles. This allows other vessels to detect the presence and direction of a vessel from a sufficient distance, particularly at night or in reduced visibility. The requirement for visibility range ensures that vessels can take appropriate action when they are approaching or passing one another, contributing to overall maritime safety.

Understanding these specifications is critical for vessel operators and anyone involved in marine operations, as they help to convey important information regarding the size and type of the vessel, as well as its direction and intentions at sea. The other options exceed this minimum requirement and do not align with the COLREGs guidelines for vessels under 50 meters in length.