Gallipoli, hydrophone training school at, naval work at, Gauchet, Vice-Admiral, Geddes, Sir Eric, becomes Admiralty Controller, becomes First Lord, disappointing forecasts of, General Headquarters in France, Staff organization at, German Army, von Schellendorft; on Staff work in, German attacks on convoys, campaign against merchant shipping, operations in the Baltic against Russia, prisoners assist a decoy ship to port, star shells, efficiency of, submarine commanders and decoy ships, submarine fleet at commencement of war and subsequent additions, view of entry of America into the war, Germans, the, a new weapon of, destroy their submarines, their choice of objectives for night attacks, their lack of enterprise, tip-and-run raids by, Germany, America declares war on, estimated total of submarines in 1917, her submarine production, naval programme of, submarine force of and her losses, Gibb, Colonel Alexander, Gibraltar, an American detachment at, an experimental convoy collected at, Gibraltar convoy, the, a reason for heavy losses in, Gibraltar convoy, the, losses in 1917, _Glen_ (decoy ship), _Goeben_ severely damaged, Gough-Calthorpe, Vice-Admiral the Hon. Sir Somerset, his Mediterranean command, _Gowan Lea_, _Grand Duke_ trawler, Grand Fleet, the, changes in command of, destroyers and, destroyers used for Atlantic trade, Grant, Captain H.W., Grant, Rear-Admiral Heathcote, his command at Gibraltar, Greenock, instructional anti-submarine school at, Gunnery courses for cadets and apprentices, Haig, Sir Douglas (Earl), commends work of air force, Halifax convoy, the, Hall, Rear-Admiral Sir Reginald, Halsey, Captain Arthur, appointed Naval Vice-Consul at Bergen, Halsey, Commodore (Rear-Admiral) Lionel, becomes Third Sea Lord, Hampton Roads and New York convoy, losses in 1917, Harwich, hydrophone station at, Harwich force, the, and its commander, duties of, intercepts a flotilla of German destroyers, Hawkcraig, hydrophone station at, Heath, Vice-Admiral Sir H.L., Heligoland Bight, mining of, proclaimed a dangerous area, Henderson, Captain Reginald G.H., a tribute to, Henderson, Captain Reginald G.H., and the convoy system, Homeward-bound convoys, losses in, Hope, Rear-Admiral George P.W., appointed Deputy First Sea Lord, Hopwood, Sir Francis (Lord Southborough), Hotham, Captain A.G., Howard, Captain W. Vansittart, Howitzers and bomb-throwers, Hydrophone stations and training schools, Hydrophones, directional, fitted to auxiliary patrols, Irvine, Lieutenant, fights a submarine,