1st ed., 1923. X + 323 pp., frontis., + 47 other photo-plates + 15 diagrams & plans. D.j., 22 x 15cm. Small tear & loss to d.j., now in a protective sleeve, o/w V.G. A detailed account of the Royal Navy's Auxiliary Patrol and its actions during World War I. The Patrol was comprised of trawlers, drifters, minesweepers, motor boats and other small craft. They were employed in anti-submarine warfare, convoy duties, coastal patrols, etc. Private craft and their owners were recruited, together with merchant seamen and fishermen who worked alongside professional naval sailors to produce an effective fighting force. This is the first full account of their operations and is illustrated with interesting photographs, diagrams and plans. Copies with their dust-jackets are uncommon.