German submarine U-47 was a Type VIIB U-boat built for Nazi Germany's Kriegsmarine, commissioned on 17 December 1938 under the command of Günther Prien. Constructed at Friedrich Krupp Germaniawerft in Kiel, she measured 66.50 meters in length with a pressure hull length of 48.80 meters. Her beam was 6.20 meters, and she had a draught of 4.74 meters, with a total displacement of 753 tonnes surfaced and 857 tonnes submerged. The submarine was powered by two Germaniawerft F46 diesel engines, producing between 2,800 and 3,200 PS, for surface propulsion, and two electric motors generating 750 PS for submerged operations. She was equipped with two shafts, twin 1.23-meter propellers, and could operate at depths up to 230 meters. U-47 was armed with five 53.3 cm torpedo tubes—four at the bow and one at the stern—carrying fourteen torpedoes. She also featured an 8.8 cm SK C/35 naval gun with 220 rounds and a 2 cm C/30 anti-aircraft gun. Her maximum surface speed was 17.9 knots, and she could reach 8 knots while submerged. Her operational range was extensive, capable of traveling 8,700 nautical miles at 10 knots on the surface and 90 nautical miles at 4 knots submerged. During her active service, U-47 completed ten patrols over 238 days at sea, sinking 31 enemy vessels totaling 162,769 GRT, including the notable sinking of the British battleship HMS Royal Oak. Her service record made her the thirteenth most successful U-boat in terms of tonnage sunk during WWII. U-47 participated in one wolfpack and was involved in various combat operations across the North Sea, Atlantic, and near the British Isles. Her fate remains unknown after her last patrol in March 1941, when she disappeared, presumed lost with all 45 crew members. Despite postwar investigations suggesting possible causes such as mines, mechanical failure, or enemy action, no definitive cause has been established. U-47's operational success and her sinking of the Royal Oak marked her as a significant vessel in WWII naval history.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.