The U-boat Shipyards

Shipyard and number of boats
AG Weser, Bremen (162)
Blohm & Voss, Hamburg (224)
Bremer Vulkan-Vegesacker Werft, Bremen-Vegesack (74)
Danziger Werft AG, Danzig (42)
Deutsche Schiff und Maschinenbau AG, Bremen (16)
Deutsche Werft AG, Hamburg (113)
Deutsche Werke AG, Kiel (69)
F Schichau GmbH, Danzig (94)
F. Krupp Germaniawerft AG, Kiel (131)
Flender Werke AG, Lübeck (42)
Flensburger Schiffsbau-Ges, Flensburg (28)
H C Stülcken Sohn, Hamburg (24)
Howaldtswerke AG, Kiel (31)
Howaldtswerke Hamburg AG, Hamburg (33)
Kriegsmarinewerft (KMW), Wilhelmshaven (27)
Neptun Werft AG, Rostock (10)
Nordseewerke, Emden (30)
Oderwerke AG, Stettin (2)
Stettiner Maschinenbau AG, Stettin (1)

U-boat production:

1935 (14)
1936 (21)
1937 (1)
1938 (9)
1939 (18)
1940 (50)
1941 (199)
1942 (237)
1943 (284)
1944 (229)
1945 (91)

Total: 1153


19 yards in 11 cities built the U-boats.

Notes
This listing shows the yards which built the 1153 U-boats commissioned into the Kriegsmarine during 1935-1945. About 1174 German built U-boats were launched overall.

Another 14 captured submarines were also commissioned bringing the total up to 1167.

This listing does not include yards only involved in development of midget submarines.

The shipyards
A map of northern Germany showing the location of the U-boat shipyards


Related:
Read about the U-boat shipyards in WWI