App.


Objectives, difficulty of locating, 42, 56, 71
Objects, secondary, 77
Offensive measures, 16, 17, 43, 262
Officers, choice of, 106, 107
Orders—
  art of writing, 66, 67  the drafting of the, 66, 67, 140, 156, 166
Osborne, Commander E. O. B. S., R.N., 178
Ostende—
  attack on, in 1798, 54, 55, 56  description of, 9, 10, 11, 12  difficulty of locating entrance, 42, 71  reason for blocking, 42  reason for omitting story, 41, 42
Outhwaite, Sub-Lieut. C., R.N.V.R., 219


Patrol craft, German, 40, 96
Peace, 266
Period available for attack, 134Personnel, remarks on behaviour, 263, 264  selection of, 102 ff.
  training of, 112, 125, 126
Phoebe, H.M.S., 220-224; App.
Photography, 129, 130, 246
Plan—
  credit for, 17, 18, 19  how built up, 262  inception, 17, 18, 67  history of, 17, 18, 67, 68  modifications of, 65  previous suggestions, 17, 70  various stages of, 64 ff., 72, 76
Plans department, 17, 67
Poison gas, 60
Port Arthur, attempts to block, 54, 56, 58
Postponement, first, 148  second, 154
Power, Rear Admiral L. E., R.N., 100
Preparations—
  preliminary, 125 ff.  final, 145, 167, 168
Preservation of life, 87
Prince Eugene, H.M.S.; App.
Printing the orders, 140
Puerto Cabello, attack on, in 1799, 54
Pyrotechnic Brigade, 194


Rain, effect of, 171, 172, 173
Rescue of men from Mole, 218
Rescue work, 87, 88, 89, 132, 229 ff., 244-249  vessels, 84
Results—
  material, 249-253  moral, 255-260
Retirement, 132, 252-260
Rigby, Lieut. Charles N. B., R.M.A., 191, 192
Robinson, Lieut. J. W., R.N.V.R., 224
Robinson, Lieut. O., R.N.V.R., 224
Rocket apparatus, 194
Rodman, Rear Admiral Hugh, U.S.N., 107, 108
Rosoman, Lieut.-Comdr. R. R., R.N., 176, 184, 188, 238, 239, 242, 259
Roux, French destroyer; App.
Royal Air Force—
  61st Wing, 85, 130  65th Wing, 85, 146
Royal Naval Reserve, 130, 263
Royal Naval Volunteer Reserve, 130, 263
Rufigi River, attempt to block, 54


St. George for England, 169
Salvage—
  effect of silt on, 23, 24, 25, 28, 51  German attempts, 251  importance of, 44, 45  previous experience, 25  remarks on, 25, 26, 44 ff., 251, 252
Sandford, Lieut-Comdr. F. H., R.N., 213, 214
Sandford, Lieut. R. D., R.N., 210, 211, 213
Santiago, attempt to block in 1898, 54, 56, 58
Scott, H.M.S.; App.
Seamanship, importance of, 41, 57, 58
Seaplane base, German, 12
Secrecy, 100, 111, 120, 121, 155
Secret, divulging the, 108, 119, 120
Shoals, 7, 41
Siege guns, 84
Signalling difficulties, 137, 138
Silt, description, 23, 24  effect of, 24, 28, 51
Sirius, H.M.S., 70, 143, 246; App.
Smith, Petty Officer, R.N., 209
Smoke, artificial—
  limitations of, 59, 60, 99  use of, 59, 60, 83, 99, 100, 175, 176, 208, 216, 217, 218, 246
Smoke-screen vessels, 83, 175
Sneyd, Commander R. S., R.N., 226, 228, 229, 235
Souvenir hunters, 248
Staff, operational duties, 66, 67, 139
Star shell, 38, 175
Stonewall Jackson's maxim, 60, 61
Stork, H.M.S.; App.
Storming the Mole, 186, 187, 188, 200-204, 213
Submarines—
  attack on viaduct, 82, 100  defensive use, 40  German, 4, 40  shelters, 10, 11
Submarines—
  C1, 210, 211, 214; App.  C3, 210-211, 213, 215, 224; App.
Success, chances of, 54, 62
Supporting squadrons, 146
Surprise, 59, 60, 61, 262
Surveys, 7, 91
Swift, H.M.S.; App.
Swin Deep, 118, 153
Synchronisation of events, 137, 138, 170


Teazer, H.M.S.; App.
Tempest, H.M.S.; App.
Teneriffe, Nelson's attack on—in 1797, 54, 55
Termagant, H.M.S.; App.
Terror, H.M.S., 174; App.
Tetrarch, H.M.S.; App.
Thetis, H.M.S., 70, 143, 171, 226 ff., 233; App.
Tidal stream—
  description, 7, 24, 30, 74  effect, 24, 92, 174, 183
Tide, rise and fall, 8, 48, 49
Tigris River, blocking of, 58
Time factor, 137-139
Time table, 138, 156
Tomkinson, Captain Wilfred, R.N., 220
Towing—
  necessity for, 142  of Iris and Daffodil, 142, 143, 173
Trench raid, analogy, 112, 113, 265
Trident, H.M.S., 224, 245; App.
Truculent, H.M.S.; App.


Ulleswater, H.M.S.; App.
United States—
  battle squadron, 107  personnel, 107, 108


Velox, H.M.S., 224; App.
Viaduct—
  attack on, 194, 195, 210-215  description, 23, 25, 82, 83
Vindictive, H.M.S.—
  anchoring, 184  attack on Ostende, 247  choice of, 76, 126  command of, 114  damage, 181, 182, 198, 238, 239, 241, 255, 256  fitting out of, 77-79, 100, 110  position at Mole, 128, 129, 202, 203  proceedings of, 143, 148, 150, 170, 173, 176, 179 ff., 200 ff.  retirement of, 230 ff.

Visibility, 136, 165
Volunteering—
  for danger, 89, 122-125, 189, 202  how arranged, 104, 105, 122, 123
Von Capelle, Admiral, 158


Walcheren expedition, 156
Walker, Lieut. H. T. C., R.N., 190
Warwick, H.M.S., 144, 168, 173, 220, 221, 222, 233, 243; App.
Weather, vagaries of, 41, 93, 246
Weller, Major B. G., R.M.L.I., 202
Welman, Lieut. A. P., R.N., 217
Wemyss, Admiral Sir Rosslyn, R.N., 157
Whirlwind, H.M.S., 224, 230; App.
Wind, importance of direction, 60, 131, 176
Wounded, behaviour of, 196, 197


Youlton, Petty Officer, E. G., R.N., 238, 242
Young, Lieut.-Comdr., R.N.V.R., 225
Yser Canal, 7


Zeebrugge, 7, 8, 9, 11  batteries, 28, 29, 31, 33  craft based at, 11, 32  German belief in security at, 33, 34  German constructions at, 26, 28, 29  canal, 10, 22  canal lock, 22, 29, 43, 44, 49  navigable channel, 28, 49  obstruction and boom, 32, 33, 41, 227  tidal harbour, 22  village, 22
Zeebrugge Mole, description, 22, 23, 24, 26, 27  approach to, 27-30  attack on: see Storming the Mole
  buildings on, 26, 28, 29, 32, 183  currents alongside, 30  garrison, 32, 81, 82  lighthouse extension, 27  outer wall, 26-28, 73, 74, 76  peace use, 22  seaplane base, 29, 32  souvenir, 244, 245  viaduct, 23, 25  Vindictive's position, 128, 129, 202, 203  war use, 29, 30
Zero time, meaning and object, 170, 173
Zone of fire, German batteries, 30
Zubian, H.M.S.; App.