You are holding in your hands the collection "Secrets of submarine warfare. Little-known pages of World War II on .mor. 1939-1945." 1995 marks the 50th anniversary of the end of this, the most difficult and bloody war in the history of mankind. For six years, several dozen countries of the world with a population of 45 of all inhabitants of the globe have been continuously fighting on almost all continents, seas and oceans. In the published works, the main emphasis was placed on the events of the Great Patriotic War of 1941-1945, which, no doubt, was one of the most important components of the Second World War. However, it would be wrong to reduce the entire past war to a confrontation between only the USSR and Germany, especially since it is generally recognized that the naval theaters of operations of the Great Patriotic War were generally secondary to the Second World War at sea.