World War II: Pearl Harbor. Aerial view showing oil-streaked waters and the dry docks at U.S. Naval Base Pearl Harbor, Hawaii, following the Japanese attack, seen on December 10, 1941.
The U-331 was a Type VIIC U-boat of German Kriegsmarine during World War II. She was laid down on 26 January 1940 at the Nordseewerke yard at Emden launched on 20 December 1940 and commissioned on 31 March 1941 under the command of Oberleutnant zur See Freiherr Hans-Diedrich von Tiesenhausen.
Gato-class submarine, artwork by Piotr Forkasiewicz and Waldemar Góralski. (Source)
The U-132 was a Type VIIC U-boat of the German Kriegsmarine during World War II. She was laid down on 10 August 1940 by Vegesacker Werft, Bremen-Vegesack as 'werk' 11, launched on 10 April 1941 and commissioned on 29 May 1941 under the command of Oberleutnant Ernst Vogelsang.