In this work, the writer reviews the actual battles underseas and presents information on the submarine fleets and arms of the great Naval Powers engaged. He stated that to understand the naval situation or the military campaigns in the Great European War, a knowledge of the scientific factors contributing to victory or defeat is essential. Contents include: Introduction—the Submarine Phase of the Naval War The Modern Submarine Torpedo-boat British Submarines French Submarines Russian Submarines Japanese Submarines German Submarines Austrian Submarines Submarines in Action Anti-submarine Tactics The Submarine Torpedo Submarine Mines Mine-laying Fleets Mine-sweeping Fleets Comparative Fighting Value of the Submarine Fleets at War
