AMSEC helps keep the Navy ship-shape. The company supplies naval architecture and marine engineering services to the Navy and commercial maritime industry. AMSEC technicians provide design, engineering, logistics, technical support, training, and maintenance services for virtually any shipboard system on ships, from aircraft carriers to submarines, at more than two dozen domestic and overseas locations neighboring US naval and industrial marine bases. AMSEC has roughly 25 locations in the US and overseas and is a subsidiary of Huntington Ingalls Industries, one of the largest naval shipbuilders in the world.