Unterseeboot 503

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Unterseeboot 503 or U-503 was a Nazi German U-Boat that operated during World War II. It was first launched on April 5th, 1941, with a crew of 51 under the command of Otto Gericke. On its first active patrol, which began on February 28th, 1942, following two previous port to port sailings, it encountered allied aircraft and sea vessels in the North Atlantic southeast of Newfoundland. It was sunk by depth charge with all hands lost on March 15th, 1942.