Submarine Warfare of To-Day

— — and Hague Convention, 150-152

— mine-laying policy, 154-156

— submarine offensive, 155

— minesweeping, 169

— submarines, loss of, 186

— mine-field, a Christmas spent on, 192-201

Grand Fleet, 233, 255, 286

— bases, 103

Granton Naval Base, 103

Guarding a mine-field, 201

Gunboats patrol, 53

Gunnery classes, 43-44

Harbour duties, 115

— mines at entrance to, 209-219

— sweeping, 162

Harwich patrols, 286

Hermione, training ship for new navy, 33, 36-49

Hope of action, 202

Hydrophone attack, 134-135

— branch of naval service, 76

— flotillas, 134-135

Hydrophones, 70-84

— object of, 70

— portable, 71

— — use of, 71-72

— construction of, 72-74

— limitations in use of, 77-78

— directional, 75

— — use of, 76

— fitted in U and U-C boats, 76-77

Iceland fishing fleet, 195, 200

Indian Ocean, mine-fields in, 145

Indicator nets, 85, 89, 138, 258-263

Intelligence offices in naval bases, 108, 129

Interpreter officers, 68

Invincible, H.M.S., 255

Isolation of mined areas, 159

Jellicoe, Sir John, 252

King’s Messengers, 108

Lance bombs, 91

Life-boat, work of, 222-223

Lighted barrage, 183

Lightning reveals U-boat, 260

Lion, H.M.S., after Jutland, 56, 254

Liverpool harbour mined-in, 209

Loss of ships, percentage of, 54, 55

Lowestoft harbour mined-in, 209

Lusitania, sinking of, 18

Manning of British ships in past, 20

Mercantile fleets under convoy, 116

— Marine, 122

— shipping in danger zone, 209

Merchant ships, loss of, due to mines, 155

Methods of attacking submarines, 134-142

Mine barrages, 129, 139, 156, 179, 286

Mine-field, Christmas on, 192-200

Mine-fields, deep-laid, 139, 179-186

Mine-layers, 233-236

Mine nets, 39, 138

Mine-protection devices, 175-178

Mined areas, isolation of, 159

Minesweeping, 54, 121, 157, 178, 209, 293-300

Mine-laying from U-C boats, 152-153, 157

Mines destroyed by British Navy, 155, 158, 209

Mines, floating, 150

Mining School, Portsmouth, 163

M.L.’s. See under Motor Launches

Modified sweeps, 96-101

Moewe, German raider, 145

Monotony, effect of, 280

Moonlight, effect of on searchlights, 297-298

Moral effect of air raids, 295

Moray Firth, mine-field in, 161

Morning divisions in warships, 41

Motor launch flotillas, 36, 115, 134-136

Motor launches, Admiralty contract for, 57

Motor launches, arrival of, 38

— construction of, 58-62

— description of, 56

— area patrolled by, 61

— loss of, 62

— in actions off Zeebrugge and Ostend, 62, 287

Mysteries of sea war, 264-272

— of submarine hunting, 126-162

— of German mine-laying, 143-156

— of minesweeping, 157-178

Mystery ships, 96, 101

— numbers employed, 96

National Insurance, 125

Naval bases, 102-115

— centres, 129

— College, Greenwich, 35