N.V. Dok & Werf Mij Wilton-Fijenoord was a Norwegian shipbuilding
company, located in Schiedam, Ships and U-boats built by N.V.
Dok & Werf Mij Wilton-Fijenoord include.
German Warships, 1815-1945: Major Surface Vessels.
German Warships, 1815-1945: U-boats and Mine Warfare Vessels.
German warships of the Second World War.
For a complete list of sources