The Submarine Torpedo Boat
Its Characteristics And Modern Development

208 INDEX Franco-Prussian War, use of mines, 196 Froude’s laws of comparison, 64, 77 Fuel ships, 186 Fulton, Robert, 3, 195 Fulton’s Nautilus, 4 Future development, 134 G Gas engines, no German submarine development, 22 German submarine operations, 156, 158 Gravity, center of, 40, 44 Ground mines, 200 Gyroscope, the, 181 Gyroscopic control of torpedo fire, 180 Gyroscopic master compass, 90, 92 H Habitability, 34, 82 Hansing, Lieut., statement of, 36 Harbor defense tactics, 158 Harbor entanglements and booms, 150 Hersing, Lieut., interview with, 36 Holland, John P., 6 Holland, the, 8 Holland type submarines in Eng- land, 20 -----in United States, 18 Holland’s Fenian Ram, 6 Housatonic, sinking of the, 6 Hovgaard, Lieut., 10 Hull, calculations for strength of, 104 ■----, circular type, 38 -----, double, 22, 44 -----, efficiency of, 70 -----, resistance, 69 -----, ship-shape form of, 38 Hull, single, 40 Hydroplanes, 28, 46 I Impracticability of large boats of the diving type, 48 Independent method of estimation of power, 78 Installation of machinery, 28 Interior communication, 95 Interview of Capt. Hersing on 2400 mile cruise to the Dardanelles, 36 Invisibility of the submarine, 143 Ironclad plates, 126 K Keel, drop, 108 -----, even, 46, 53 Krupp Diesel type engines, 120 Krupp, German submarine develop- ment by, 22 L Lake, Simon, inventor, 14 Lake type, 18 L. A. Submarine Boat Co., type, 131 Large type submarine, 136 Lauboeuf type, 12 Laurenti type, 20 Law, Froude’s, 64, 77 Lead accumulator cells, 124 Lee, Corporal Ezra, 2 Le Morse, 8 Le Plongeur, 6 Limit of effective torpedo range, 28 Limitations of present dual system of propulsion, 18 List of accidents, 192 List of requirements of U. S. N., 15 Loading gear for torpedoes, 97 Lupius, Capt., 174