German submarine U-2 was a Type IIA U-boat of Nazi Germany's Kriegsmarine. Her keel was laid down 11 February 1935 by Deutsche Werke of Kiel as yard number 237; she was launched on 1 July and commissioned on 25 July 1935 with Oberleutnant zur See (Oblt.z.S.) Hermann Michahelles in command.
German submarine U-3 was a Type IIA U-boat laid down at the Deutsche Werke in Kiel on 11 February 1935 as yard number 238. She was commissioned into the Kriegsmarine on 6 August 1936 under the command of Oberleutnant zur See (Oblt.z.S.) Hans Meckel.
German submarine U-5 was a Type IIA U-boat of Nazi Germany's Kriegsmarine. She was laid down on 11 February 1935, launched on 14 August and commissioned 31 August that year, under Oberleutnant zur See Rolf Dau.
German submarine U-632 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 4 September 1941 at the Blohm & Voss yard at Hamburg, launched on 27 May 1942, and commissioned on 23 July 1942 under the command of Oberleutnant zur See Hans Karpf.
German submarine U-854 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.
German submarine U-644 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 1 December 1941 at the Blohm & Voss yard at Hamburg, launched on 20 August 1942, and commissioned on 15 October 1942 under the command of Oberleutnant zur See Kurt Jensen.
German submarine U-648 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 24 December 1941 at the Blohm & Voss yard at Hamburg, launched on 16 September 1942, and commissioned on 12 November 1942 under the command of Leutnant zur See d.R. Peter-Arthur Stahl.
German submarine U-649 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 12 January 1942 at the Blohm & Voss yard at Hamburg, launched on 30 September 1942, and commissioned on 19 November 1942 under the command of Oberleutnant zur See Raimund Tiesler.
German submarine U-647 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 29 December 1941 at the Blohm & Voss yard at Hamburg, launched on 16 September 1942, and commissioned on 5 November 1942 under the command of Kapitänleutnant Willi Hertin.
German submarine U-668 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 11 October 1941 at the Howaldtswerke yard at Hamburg, launched on 5 October 1942, and commissioned on 16 November 1942 under the command of Oberleutnant zur See Wolfgang von Eickstedt.
German submarine U-670 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 25 November 1941 at the Howaldtswerke yard at Hamburg, launched on 15 December 1942, and commissioned on 26 January 1943 under the command of Oberleutnant zur See Guido Hyronimus.
German submarine U-671 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 2 December 1941 at the Howaldtswerke yard at Hamburg, launched on 15 December 1942, and commissioned on 3 March 1943 under the command of Oberleutnant zur See August-Wilhelm hewicker.
German submarine U-672 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 24 December 1941 at the Howaldtswerke yard at Hamburg, launched on 27 February 1943, and commissioned on 6 April 1943 under the command of Oberleutnant zur See Ulf Lawaetz.
German submarine U-673 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 20 January 1942 at the Howaldtswerke yard at Hamburg, launched on 27 February 1943, and commissioned on 8 May 1943 under the command of Oberleutnant zur See Gerhard Haelbich.
German submarine U-675 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 9 April 1942 at the Howaldtswerke yard at Hamburg, launched on 8 May 1943, and commissioned on 14 July 1943 under the command of Oberleutnant zur See Karl-Heinz Sammler.
German submarine U-680 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 12 October 1942 at the Howaldtswerke yard at Hamburg, launched on 20 November 1943, and commissioned on 23 December 1943 under the command of Oberleutnant zur See Max Ulber.
German submarine U-683 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 23 December 1942 at the Howaldtswerke yard at Hamburg, launched on 7 March 1944, and commissioned on 30 May 1944 under the command of Oberleutnant zur See Günter Keller.
German submarine U-719 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 3 July 1942 at the H. C. Stülcken Sohn yard at Hamburg, launched on 28 April 1943, and commissioned on 27 July 1943 under the command of Oberleutnant zur See Klaus-Dietrich Steffens. Attached to 5th U-boat Flotilla based at Kiel, U-719 completed her training period on 30 April 1944 and was assigned to front-line service.
German submarine U-720 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 17 August 1942 at the H. C. Stülcken Sohn yard at Hamburg, launched on 5 June 1943, and commissioned on 17 September 1943 under the command of Leutnant zur See Wolf-Harald Schüer.
German submarine U-733 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 13 October 1941 at the Schichau-Werke yard at Danzig, launched on 5 September 1942, and commissioned on 14 November 1942 under the command of Oberleutnant zur See Wilhelm von Trotha.
Nazi Germany 
