at Narvik after the attack on the ships of
Convoy PQ 17 During the
occupation, several of the nation's naval ports were turned into U-boat bases that were used to harass Allied shipping in the North Atlantic and Arctic Oceans. These included Bergen, Narvik, Trondheim, Hammerfest and Kirkenes. Over 240 U-boats were stationed in Norway at various times during the war, most of them were members of the
11th U-boat Flotilla which had 190 U-boats in its fleet during the flotilla's career. Other well-known flotillas in Norway included the
13th and
14th flotillas.
Bergen The southern port of Bergen was captured by the Germans on 9 April 1940, on the first day of the invasion. The Germans immediately saw the potential for several Norwegian harbours and ports to function as bases of operation for the 's U-boats patrolling the North Sea and the Arctic Ocean. It would become the home of the
11th U-boat Flotilla. Bergen was the first Norwegian port to be established as a U-boat base. From July 1940 to the end of the war in May 1945, 270 U-boat patrols originated in Bergen. Bergen was also the site where the only
type XXI submarine left for a patrol in the war; left the port on 3 May 1945. The list of surrendered U-boats in Trondheim included following: , , , , , , , , , , , and . Two U-boat bunkers, codenamed "
Dora I" and "
Dora II", were constructed in Trondheim to provide additional repair facilities outside Germany itself. Like the bunkers in Bergen, the two bunkers in Trondheim came under the control of the Todt Organisation. but was never completed. If finished it would have been long by wide, with four pens capable of holding six U-boats. ==Notes==