22nd U-boat Flotilla

22nd U-boat Flotilla
Unit name	22nd U-boat Flotilla
Dates	January 1941 – May 1945
Country	Nazi Germany
Branch	Nazi Germany
Type	U-boat flotilla
Role	Training and operational testing
Garrison	Gotenhafen
Garrison label	Base
Notable commanders	Wolfgang Lüth, Karl-Friedrich Merten

22nd U-boat Flotilla was a specialized training and experimental unit of the Kriegsmarine during the Second World War. Established in the Baltic port of Gotenhafen, its primary mission was to prepare new U-boat crews for frontline service and to evaluate innovative submarine technologies under combat conditions. Unlike frontline flotillas engaged in the Battle of the Atlantic, it operated primarily in the confined waters of the Baltic Sea, though it occasionally dispatched boats to the Arctic Ocean and other theaters. The flotilla was formally dissolved in May 1945 amid the final collapse of Nazi Germany.

History

The flotilla was formed in January 1941 under the command of Korvettenkapitän Wilhelm Ambrosius, initially as a training unit subordinate to the BdU (Befehlshaber der U-Boote). Its creation was part of the Kriegsmarine's rapid expansion of its U-boat arm following the early successes of the "First Happy Time." Based at the major naval facility in Gotenhafen (modern Gdynia), it leveraged the secure training grounds of the Baltic Sea, away from the threat of Royal Air Force bombers. Throughout its existence, it remained distinct from combat flotillas like the 1st U-boat Flotilla or the 7th U-boat Flotilla, focusing on the critical pipeline of crew qualification and tactical development.

Organization and command

The flotilla's structure was typical of Kriegsmarine training formations, comprising a staff headquarters, administrative personnel, and a rotating complement of U-boats and their trainee crews. Command passed to Kapitän zur See Wolfgang Lüth in September 1941, a highly decorated commander from the Battle of the Atlantic. Lüth was succeeded in August 1942 by Fregattenkapitän Karl-Friedrich Merten, another ace known for his successes in the South Atlantic. The final commander, from July 1944 until dissolution, was Korvettenkapitän Hermann Rigele. The flotilla worked in close coordination with the U-Boot-Abwehrschule (U-boat Anti-Submarine Warfare School) and reported through the chain of command to Grand Admiral Karl Dönitz.

Assigned U-boats

The flotilla was assigned a diverse array of submarine types, primarily for training and testing purposes. These included older boats like the Type II coastal U-boats, used for basic seamanship, and the larger Type VII and Type IX models for advanced tactical training. It also operated several experimental vessels, such as the Type XVII Walter boat, which used hydrogen peroxide propulsion, and the Type XXI "Elektroboot," the revolutionary design that entered service too late to affect the war. Boats were cycled through the flotilla for work-up periods before being transferred to operational units like the 11th U-boat Flotilla.

Operations and patrol areas

While primarily a training command, the flotilla conducted operational patrols, often termed "front exercises," to provide realistic experience. These patrols were largely confined to the Baltic Sea, particularly the Bay of Danzig and the Gulf of Finland, where they sometimes engaged Soviet Navy forces. Some boats were detached for special missions or combat tours in other theaters; for instance, several flotilla U-boats saw action in the Arctic Ocean supporting operations against the Murmansk convoys. The secure Baltic environment also allowed for extensive testing of new equipment, such as the snorkel and advanced sonar systems, under simulated combat conditions.

Notable commanders and personnel

Beyond its commanding officers, the flotilla was associated with several notable U-boat officers who either served on its staff or passed through with their crews. These included Heinrich Lehmann-Willenbrock, later commander of U-96 immortalized in Das Boot, and Reinhard Suhren, a famed chief engineer. Many junior officers and crewmen who trained with the flotilla later participated in major engagements of the Battle of the Atlantic, including the confrontations around convoy SC 7 and the defense of the German battleship Tirpitz. The flotilla's role in evaluating the Type XXI submarine involved key engineers from Blohm & Voss and AG Weser.

Dissolution and fate

As the Eastern Front collapsed in early 1945, the flotilla's base in Gotenhafen became untenable in the face of the advancing Red Army during the East Prussian offensive. Training activities ceased, and the remaining U-boats were either scuttled in accordance with the Regenbogen orders or fled westward. The final dissolution occurred in May 1945, coinciding with the German surrender at Lüneburg Heath. Most surviving personnel were captured by Soviet or Western Allied forces, and several of the flotilla's experimental submarines were seized and studied by the victors as part of postwar technical exploitation programs.

Category:U-boat flotillas of Nazi Germany Category:Military units and formations established in 1941 Category:Military units and formations disestablished in 1945