The USCG Light List is published in seven volumes and contains lights and other aids to navigation. It is used for general navigation aids that are maintained by or under the authority of the US Coast Guard and located in the waters surrounding the United States and its territories. Each volume corresponds to a different regional area and contains more complete information on each aid to navigation. This publication and the data contained within it is maintained by the USCG and published with permission by Clipper City Publisher. New editions are published annually for each volume.