How many white anchor lights must a barge longer than 50 meters show when anchored in a Secretary of Transportation approved "special anchorage area"?

A barge longer than 50 meters is required to display two white anchor lights when anchored in a Secretary of Transportation approved "special anchorage area". This regulation is in place to ensure that vessels are adequately illuminated at night for safety and visibility.

The requirement for two anchor lights serves multiple purposes. First, it enhances the visibility of the barge to other vessels in the area, reducing the risk of collisions. Second, having two lights confirms the size of the vessel, indicating to passing craft that they should take appropriate caution due to the size and potential maneuverability limitations of longer barges.

In general, regulations for anchor lights—including the number and type—are designed to standardize how vessels communicate their status while at anchor. This consistency is critical in busy waterways, particularly in designated special anchorage areas where navigation may vary due to the presence of numerous vessels.