The List of U-boat flotillas includes the German U-boat flotillas that served during both World Wars. The bases listed are those where the flotillas spent most of their operational careers. During World War II, submarine flotillas were often deployed for tactical purposes, unlike the surface flotillas of the Kriegsmarine, which were primarily administrative.

World War I This list contains the German U-boats flotillas during the First World War.

+ U-boat flotillas of World War I Name Type Base High Seas Fleet Flotillas * Wilhelmshaven Flanders Flotillas * Bruges Pola Flotilla (Adriatic) * Pula, Cattaro Kurland Flotilla Baltic Sea * Libau Constantinople Flotilla (Black Sea) * Constantinople

World War II This list contains the German U-boats flotillas during the Second World War. After 1941, the U-boat flotillas were in turn organized into U-boat regions.

+ U-boat flotillas of World War II Emblem Name Type Base 1st U-boat Flotilla Combat Brest 2nd U-boat Flotilla Combat Lorient 3rd U-boat Flotilla Combat La Rochelle 4th U-boat Flotilla Training Stettin 5th U-boat Flotilla Training Kiel 6th U-boat Flotilla Combat St. Nazaire 7th U-boat Flotilla Combat St. Nazaire 8th U-boat Flotilla Training Danzig 9th U-boat Flotilla Combat Brest 10th U-boat Flotilla Combat Lorient 11th U-boat Flotilla Combat Bergen 12th U-boat Flotilla Combat Bordeaux 13th U-boat Flotilla Combat Trondheim 14th U-boat Flotilla Combat Narvik 18th U-boat Flotilla Training Hela 19th U-boat Flotilla Training Pillau 20th U-boat Flotilla Training Pillau 21st U-boat Flotilla Training Pillau 22nd U-boat Flotilla Training Gotenhafen 23rd U-boat Flotilla Combat/Training Salamis/Danzig 24th U-boat Flotilla Training Memel 25th U-boat Flotilla Training Libau 26th U-boat Flotilla Training Pillau 27th U-boat Flotilla Training Gotenhafen 29th U-boat Flotilla Combat La Spezia 30th U-boat Flotilla Combat Konstanza 31st U-boat Flotilla Training Hamburg 32nd U-boat Flotilla Training Königsberg 33rd U-boat Flotilla Combat Flensburg

External links Uboat.net: U-boat flotillas webpage