During the World War 1914-1918 submarines sank 200 surface warships of various classes and about 6 thousand merchant ships with a total tonnage of 13 million. Using mainly foreign sources, the author considers the means and methods of anti-submarine warfare that developed during the World War of 1914-1918. The book describes the most characteristic anti-submarine barrages and minefields; considered samples of special weapons - depth charges, towed mines and deep-sea torpedoes; illuminated technical means for detecting submarines - noise direction finders, magnetic and electromagnetic devices;...