During the Second World War, the German Navy built over a thousand U-boats or submarines for service in the Battle of the Atlantic and elsewhere. Although the majority of these had active service careers, and 784 of them were lost at sea, there were still several hundred boats which were never completed or completed too late to see any war service. These boats were sometime solely commissioned as training craft, or were too badly damaged by bombing to be worth completion. Most however were finished in the last six months of the war and never had time or enough fuel to complete their training programs. These boats remained in German harbours up until April/May 1945, when most were taken out to sea by skeleton crews and scuttled to prevent the allies capturing them. The boats that were captured were taken by the Allies to Loch Ryan in Scotland and Lisahally in Northern Ireland. Some were presented to allied navies for commissioning or experiments, but the majority of captured U-boats were towed out to sea in the autumn of 1945 and sunk by gunfire in Operation Deadlight.

U-11

Type: IIB Construction Laid Down: May 6, 1935 Launched: August 27, 1935 Commissioned: September 21, 1935 Shipyard: Germaniawerft, Kiel Commander Hans Rudolf Rösing Viktor Schütze Georg Peters Gottfried Stolzenburg Günter Dobenecker Fate: Mainly served as a school and training boat, but did carry out trials for the Alberich anechoic tiles in 1940. Laid up at Gotenhafen on December 14, 1944. Towed to Kiel and decommissioned on January 5, 1945. Scuttled at the Arsenal in Kiel on May 5, 1945. Wreck broken up in 1947. U-boat.net webpage for U-11

U-80

Type: VIIC Construction Laid Down: April 17, 1940 Launched: February 11, 1941 Commissioned: April 8, 1941 Shipyard: Bremer Vulkan, Bremen-Vegesack Commander Georg Staats Hans Benker Oskar Curio Hans-Adolf Isermeyer Hans Keerl Fate: Served as a training boat. Sunk in the Baltic Sea west of Pillau (now Baltiysk) in a diving accident on November 28, 1944. U-boat.net webpage for U-80

U-112 Type: XIB Construction Laid Down: Launched: Commissioned: Shipyard: AG Weser, Bremen Commander

Fate: Construction suspended on September 15, 1939, and cancelled in May 1940. Some sources claim that U-112 was completed and sailed against the US in 1945 and sunk there with all hands, but there is no evidence to support this claim. U-boat.net webpage for U-112

U-113 Type: XIB Construction Laid Down: Launched: Commissioned: Shipyard: AG Weser, Bremen Commander

Fate: Construction suspended on September 15, 1939, and cancelled in May 1940. U-boat.net webpage for U-113

U-114 Type: XIB Construction Laid Down: Launched: Commissioned: Shipyard: AG Weser, Bremen Commander

Fate: Construction suspended on September 15, 1939, and cancelled in May 1940. U-boat.net webpage for U-114

U-115 Type: XIB Construction Laid Down: Launched: Commissioned: Shipyard: AG Weser, Bremen Commander

Fate: Construction suspended on September 15, 1939, and cancelled in May 1940. U-boat.net webpage for U-115

U-120 Type: IIB Construction Laid Down: March 31, 1938 Launched: March 16, 1940 Commissioned: April 20, 1940 Shipyard: Flender Werke, Lübeck Commander Ernst Bauer Wolfgang Heyda Willy-Roderich Körner Hans Fiedler Alfred Radermacher Adolf Gundlach Joachim Sauerbier Rolf Rüdiger Bensel Fate: Originally built for the Republic of China, but when Japan complained, it was turned over to the Kriegsmarine instead, serving as a training boat in the 21st Flotilla and then the 31st Flotilla. Scuttled at Wesermünde on May 5, 1945. Raised and broken up between October 1949 and November 1950. U-boat.net webpage for U-120

U-121 Type: IIB Construction Laid Down: April 16, 1938 Launched: April 20, 1940 Commissioned: 28 May 1940 Shipyard: Flender Werke, Lübeck Commander Karl-Ernst Schroeter Otto Harms Adalbert Schnee Egon Reiner Freiherr von Schlippenbach Gert Hetschko Ernst von Witzendorff Otto Westphalen Otto Hübschen Ewald Hülsenbeck Friedrich Horst Fate: Originally built for the Republic of China, but when Japan complained, it was turned over to the Kriegsmarine instead, serving as a training boat in the 21st, 24th, and 31st flotillas. Scuttled at Alten Hafen in Wesermünde on May 5, 1945. Raised November 2, 1949 and broken up. U-boat.net webpage for U-120

U-148 Type: IID Construction Laid Down: April 10, 1940 Launched: November 16, 1940 Commissioned: December 28, 1940 Shipyard: Deutsche Werft, Kiel Commander Hans-Jürgen Radke Eberhard Mohr Rudolf Heinz Franke Herbert Brüninghaus Goske von Möllendorff Heinz Schäffer Renko Tammen Fate: Served as a training boat. Scuttled in the Raederschleuse (lock) at Wilhelmshaven on May 5, 1945. Later broken up. U-boat.net webpage for U-148

U-150 Type: IID Construction Laid Down: May 25, 1940 Launched: October 19, 1940 Commissioned: November 17, 1940 Shipyard: Deutsche Werft, Kiel Commander Hinrich Kelling Hermann Schultz Emil Ranzau Hunold von Ahlefeld Hans-Helmut Anschütz Jürgen Kriegshammer Fate: Served as a training boat. Surrendered on May 5, 1945, at Heligoland, Germany. Transferred to Loch Ryan from Wilhelmshaven on June 30, 1945, for Operation Deadlight. Sunk on December 21, 1945, by gunfire from and . U-boat.net webpage for U-150

U-151 Type: IID Construction Laid Down: July 6, 1940 Launched: December 14, 1940 Commissioned: January 15, 1941 Shipyard: Deutsche Werft, Kiel Commander Hans Oestermann Gustav-Adolf Janssen Kurt Eichmann Paul Just Karl-Erich Utischill Ferdinand Graf von Arco Fate: Served as a training boat. Scuttled in the Raederschleuse (lock) at Wilhelmshaven on May 5, 1945. Later broken up. U-boat.net webpage for U-151

U-152 Type: IID Construction Laid Down: July 6, 1940 Launched: December 14, 1940 Commissioned: January 29, 1941 Shipyard: Deutsche Werft, Kiel Commander Peter-Erich Cremer Werner Bender Hans Hildebrandt Hans-Ferdinand Geisler Victor-Wilhelm Nonn Wilhelm Bergemann Gernot Thiel Fate: Served as a training boat. Scuttled in the Raederschleuse (lock) at Wilhelmshaven on May 5, 1945. Later broken up. U-boat.net webpage for U-152

U-222

Type: VIIC Construction Laid Down: June 16, 1941 Launched: March 28, 1942 Commissioned: May 23, 1942 Shipyard: Germaniawerft, Kiel Commander Ralf von Jessen Fate: Served as a training boat in the 8th Flotilla. Sunk in the Baltic Sea west of Pillau (now Baltiysk) September 2, 1942 following a collision with . U-boat.net webpage for U-222

U-236

Type: VIIC Construction Laid Down: March 23, 1942 Launched: November 24, 1942 Commissioned: January 9, 1943 Shipyard: Germaniawerft, Kiel Commander Reimar Ziesmer Curt Hartmann Ludo Kregelin Herbert Mumm Fate: Served as a training boat in the 5th, 24th, 21st, and 31st flotillas. Sunk inside pontoon No. 5 at the Germaniawerft shipyard on May 14, 1943, during a US air raid. Raised on May 22, 1943, repaired, and returned to service on September 22, 1943. Scuttled in the Baltic Sea west of Schleimünde on May 5, 1945, following an attack by RAF Typhoon aircraft the day before. U-boat.net webpage for U-236

U-237

Type: VIIC Construction Laid Down: April 23, 1942 Launched: December 17, 1942 Commissioned: January 30, 1943 Shipyard: Germaniawerft, Kiel Commander Hubert Nordheimer Lothar König Johannes van Stipriaan Karl-Heinz Menard Fate: Served as a training boat in the 5th Flotilla. Sunk inside pontoon No. 5 at the Germaniawerft shipyard on May 14, 1943, during a US air raid. Raised on May 26, 1943, repaired, and returned to service on October 8, 1943, serving in the 23rd Flotilla as a trials boat. Sunk at the fitting out quay at Germaniawerft on April 4, 1945, during a US bombing raid. U-boat.net webpage for U-237

U-239

Type: VIIC Construction Laid Down: May 14, 1942 Launched: January 28, 1942 Commissioned: March 28, 1943 Shipyard: Germaniawerft, Kiel Commander Ulrich Vöge Fate: Served as a training and school boat with the 5th and 23th flotillas. Decommissioned on August 5, 1944, and broken up after being badly damaged at the Deutsche Werke shipyard during a British bombing raid on July 24, 1944. U-boat.net webpage for U-239

U-272

Type: VIIC Construction Laid Down: November 28, 1941 Launched: August 15, 1942 Commissioned: October 7, 1942 Shipyard: Bremer Vulkan, Bremen-Vegesack Commander Horst Hepp Fate: Served as a training boat in the 8th Flotilla. Sunk in the Baltic Sea off Hela on November 12, 1942, following a collision with . U-boat.net webpage for U-272

U-291

Type: VIIC Construction Laid Down: October 17, 1942 Launched: June 30, 1943 Commissioned: August 4, 1943 Shipyard: Bremer Vulkan, Bremen-Vegesack Commander Hans Keerl Friedrich Stege Hermann Neumeister Fate: Served as a training boat in the 21st and 31st flotillas and as a trials boat in the 23rd Flotilla. Surrendered May 5, 1945 at Cuxhaven, Germany. Transferred to Loch Ryan, Scotland from Wilhelmshaven on June 24, 1945. Sunk by gunfire from on December 20, 1945, as part of Operation Deadlight. U-boat.net webpage for U-272

U-298

Type: VIIC/41 Construction Laid Down: February 23, 1943 Launched: October 25, 1943 Commissioned: December 1, 1943 Shipyard: Bremer Vulkan, Bremen-Vegesack Commander Ortwin Hensellek Otto Hohmann Heinrich Gehrken Fate: Served as a training boat in the 8th Flotilla before serving as a school boat in the U-Abwehrschule (U-Boat School). Surrendered May 9, 1945 at Bergen, Norway. Transferred to Loch Ryan, Scotland on May 30, 1945. Sunk by shellfire from and on November 29, 1945, as part of Operation Deadlight. U-boat.net webpage for U-298

U-316

Type: VIIC Construction Laid Down: August 11, 1942 Launched: June 19, 1943 Commissioned: August 5, 1943 Shipyard: Flender Werke, Lübeck Commander Hermann Stuckmann Gottfried König Fate: Served as a school boat in the 22nd and 23rd flotillas before serving as a training boat in the 31st Flotilla. Scuttled on May 2, 1945, near Travemünde. Later broken up. U-boat.net webpage for U-316

U-323

Type: VIIC/41 Construction Laid Down: March 12, 1943 Launched: January 12, 1944 Commissioned: March 2, 1944 Shipyard: Flender Werke, Lübeck Commander Max Bokelberg Siegfried Pregel Hans-Jürgen Dobinsky Fate: Served as a school boat in the 4th Flotilla. Scuttled on May 5, 1945, at Nordenham as part of Operation Regenbogen. Later broken up. U-boat.net webpage for U-323

U-329 Type: VIIC/41 Construction Laid Down: July 15, 1943 Launched: Commissioned: Shipyard: Flender Werke, Lübeck Commander

Fate: Construction suspended on September 30, 1943. Cancelled on July 20, 1944, and broken up. U-boat.net webpage for U-329

U-330 Type: VIIC/41 Construction Laid Down: August 3, 1943 Launched: Commissioned: Shipyard: Flender Werke, Lübeck Commander

Fate: Construction suspended on September 30, 1943. Cancelled on July 20, 1944, and broken up. U-boat.net webpage for U-330

U-345

Type: VIIC Construction Laid Down: July 9, 1942 Launched: March 11, 1943 Commissioned: May 4, 1943 Shipyard: Nordseewerke, Emden Commander Ulrich Knackfuß Fate: Served as a training boat in the 8th Flotilla. Decommissioned on December 23, 1943, at the Howaldtswerke shipyard in Kiel following a US bombing raid on December 13. Sank under tow in the Baltic Sea off Warnemünde on February 2, 1944. Raised in April 1953 and broken up at Stralsund. U-boat.net webpage for U-345

U-346

Type: VIIC Construction Laid Down: October 28, 1942 Launched: April 13, 1943 Commissioned: June 7, 1943 Shipyard: Nordseewerke, Emden Commander Arno Leisten Fate: Served as a training boat in the 8th Flotilla. Sunk on September 20, 1943, in the Baltic Sea off Hela in a diving accident. U-boat.net webpage for U-346

U-349

Type: VIIC Construction Laid Down: December 29, 1942 Launched: July 22, 1943 Commissioned: September 8, 1943 Shipyard: Nordseewerke, Emden