HMSO, 1st.ed., thus, 1912. 527 pp., many diagrams. Black cloth ; gilt lettering & fouled anchor to front board. 13 x 11cm. V.G. An Admiralty pocket manual for torpedo drill just prior to the First World War. Contents include Batteries and Cells, Cables and Junctions, Testing, Detonators, Torpedo Tubes, Fuzes, Guncotton and Dynamite, Firing Keys, Creeping, Net Defence, Gun and Whitehead Circuits, Night Sights and Dynamo Firing, Communications, Fire Control, Searchlights and Arc Lamps, Details of Torpedoes, Whitehead Drill, Gyroscope and Director, etc. Illustrated with diagrams.