World War 2: Testing the underwater stability on the U-7 submarine

U-7 submarine

World War 2 photo: Checking the underwater stability on a German submarine U-7 (Unterseeboot). Stability – the ability of a ship to resist external forces that cause its roll or trim, and return to a state of equilibrium at the end of this impact.

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World War 2 Photos

Second World War (September 1, 1939 - September 2, 1945) - war two world military-political coalitions, which became largest armed conflict in mankind's history. World War 2 - 62 from 73 states that existed at that time (80% world's population) participated. [ more ... ]