Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 74. Chapters: Submarines of Austria-Hungary, Submarines of Belgium, Submarines of Chile, Submarines of France, Submarines of Germany, Submarines of Italy, Submarines of Malaysia, Submarines of Peru, Submarines of Poland, Submarines of Russia, Submarines of South Korea, Submarines of Sweden, Submarines of the Confederate States of America, Submarines of the Netherlands, Submarines of the Soviet Union, Submarines of the United Kingdom, Submarines of the United States, Bathyscaphe Trieste, German submarine U-81, H. L. Hunley, German submarine U-96, German submarine U-74, Soviet submarine K-222, German submarine U-123, German submarine U-28, German submarine U-32, List of German U-boats, List of successful U-boat commanders, List of the largest ships hit by U-boats in World War I, Austro-Hungarian U-boat classes, Turtle, MIR, List of Austro-Hungarian U-boats, Gotland class submarine, List of submarines of the Royal Navy, List of U-boats never deployed, Nautilus, Pisces V, TR-1700 class submarine, Pisces IV, Toro Submarino, A26 submarine, List of successful U-boats, List of submarine classes of the Royal Navy, List of U-boat types, Finnish submarine Vesikko, Flach, List of submarine operators, FNRS-2, S1000 submarine class, List of submarines of the Royal Swedish Navy, Archimede, Brandtaucher, FNRS-3, Vastergotland class submarine, Finnish submarine Saukko, French submarine Ouessant, Bayou St. John Confederate Submarine, List of U-boat flotillas, Pioneer, Submarine Cargo Vessel, Russian submarine Forel, ROKS Chang Bogo, Cosmos class submarine, German submarine U-20, German submarine U-27, German submarine U-34, German submarine U-35, German submarine U-5, German submarine U-21, German submarine U-33, German submarine U-11, German submarine U-14, German submarine U-15, German submarine U-23, German submarine U-16, German submarine U-29...