A short history of the Thornycroft coastal motor boats (C.M.Bs.)

"This pamphlet was submitted to the Admiralty for approval and permission to publish before being printed. Part I gives an historical record of the work of the C.M.Bs. during the war, was published in our first issue of this booklet in December, 1918. Part II has been added, giving a record of their work in the Kronstadt, Archangel and Caspian Sea expeditions during 1919."--From cover.