Motor launches:-- No. 110, 225; App. No. 128, 224; App. No. 282, 230, 231, 232, 233, 234; App. No. 308, 225; App. No. 424, 224; App. No. 526, 229, 232, 233; App. No. 558, 224, 226; App. Nos. 11, 16, 17, 22, 23, 30, 60, 79, 105, 121, 223, 239, 241, 249, 252, 254, 258, 262, 272, 274, 276, 279, 280, 283, 314, 345, 397, 416, 420, 422, 429, 448, 512, 513, 525, 532, 533, 538, 549, 551, 552, 555, 556, 557, 560, 561, 562; App. _Myngs_, H.M.S., 224; App. Napoleon's maxim, 95 Navigation, coastal, 56, 57 difficulties and dangers, 7, 8, 40, 41 importance of accuracy, 90 _ff._, 178 open sea, 56 Nelson, Lord, 55, 147, 148 Newbold, Lieut. Aubrey C., R.N., 210, 214 Nieuport, 6, 7, 8 _North Star_, H.M.S., 220, 221, 222, 223; 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, 134 Personnel, 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