Thermit bomb, 163. Tide, how it helps lifting operations, 127. Tides and salvage, 5. Timber frame upholds battleship, 91. Timber jackets for pontoons, 153. Timber props to strengthen wreck, 110. Timber structure, remarkable, 90. Timber used in salvage work, 90. Timbers support 20,000 tons, 91. Timbers withstand 225 tons pressure per square inch, 91. _Timbo_, wreck of, 186. Tirpitz, 117. Tobermory Bay, 20. Tobermory treasure-hunt, 19. Tonnage, increase in, 114. Tools used by divers, 194. Torpedoed ships, how their positions were noted, 99. Torpedoes found in U.44, 130. Torpedoing at sight, 96. Torpedoing of _Westmoreland_, 106. Towing battleship upside-down, 90. Towing off stranded ships, 186, 187. Tragedies of sunken submarines, 118. Tragedy caused by oats, 178. Tragedy of oil tankers, 161. Trapped in sunken submarine, 131, 146, 152. Trapping air to salve a ship, 85. Treasure and business men, 11. Treasure, Captain Kidd’s, 11. Treasure-hunt at Tobermory, 19. Treasure-hunt of British Navy, 65–78. Treasure-hunting finance, 12. Treasure of _Alphonso XII._, 57. Treasure of _Florencia_, 19. Treasure of Incas, 11. Treasure of _Laurentic_, value found, 77. Treasure of _Lutine_, 23. Treasure recovered from _Lutine_, 26. Treasure recovered from _Oceana_, 50. Treasure-hunters beaten, 32. Treasure-hunters chased by pirates, 62–64. Tricks of salvors, 205. Tripods, use in raising ships upright, 164. Troopship, scuttling of a, 163. Troopships protected by nets, 96. Trunkway, 110. Tug of war between wreck and railway engines, 164, 165. Tugs tow battleship upside-down, 90. Tyne, _Milwaukee_ towed to, 182. U-boat carried 40 miles, 158. U-boat sinks oil tanker off New York, 163. U-boat, why Admiralty salved it, 124. U-boats and British Salvage Section, 97. U-boats, netting, 116. U.44 atrocity, 118. U.44 carried three-quarters of a mile, 127. U.44, depth of wreck, 124. U.44, destruction of, 123. U.44, its mission, 121. U.44, method of finding, 124. Umbrella patch, 206. Underwriters lose £900,000, 23. Vancouver, 32. _Vindictive_, full of cement, 115. _Vindictive_, German failure to raise, 115. _Vindictive_, mines aboard when sunk, 115. _Vindictive_, problems of raising, 115. _Vindictive_ raised, 116. Vlieland, 25. Wagenfuhr, Paul, 119. War interrupts food supplies in Britain, 96. _War Knight_, 160–163. War wrecks and British Government, 112. War-time salvage depots, 97. War-time shipbuilding, 114. Water as ballast, 111. Water _versus_ air, 35, 36. Waterford, 121. Weather, influence of, 5. Weather prevents salvage work, 108. _Westmoreland_, 105. _Westmoreland_, depth of wreck, 107. _Westmoreland_, extent of damage to, 106. _Westmoreland_, fight to save, 106, 107. _Westmoreland_, sinking of, 107.