U-47, a German World War II submarine, was primarily assigned to the 7th U-boat Flotilla throughout its career. The 7th Flotilla, based in Kiel and later in St. Nazaire in occupied France, was one of the most prestigious units in the German Kriegsmarine. U-47 gained particular fame under the command of Günther Prien, especially for the daring attack on the British battleship HMS Royal Oak at Scapa Flow in October 1939.

For further detailed reading and historical context, you can refer to historical records and databases such as those found at uboat.net.

Keep in mind that specific operational details and historical nuances about U-47 and its missions may also be found in World War II naval warfare books and archives.