The Mobile District maintains a fleet of deck and cargo barges to support navigation, natural resources, and emergency operations. The fleet barges vary in size, and some have unique equipment for specialized roles. The most common barge size is 120' x 30' x 7', and the most common type is a flat-deck barge. The most common missions are stoplog storage and transport, material handling, equipment platform, and transportation. The fleet is varied in age, with the oldest units approaching 75 years old and the newest less than 5 years old.