List of Austro-Hungarian U-boats

Kriegsmarine) built a series of U-boats between 1907 and 1918 to defend its coastline and project naval power into the Adriatic and Mediterranean Seas in wartime.

[1] Montecuccoli immediately pursued the efforts championed by his predecessor, Admiral Hermann von Spaun, and pushed to greatly expand and modernize the Austro-Hungarian Navy.

[2] The Austro-Hungarian U-boat fleet during the First World War mainly consisted of German designs built under licence and purchased units transported by rail from Germany's northern shipyards to the Austrian ports on the Adriatic Sea.

They served throughout the war against Italian, French and British shipping in the Mediterranean Sea with some success, losing 8 of the 28 boats in service in return.

In other cases, U-boats commissioned into the Imperial German Navy were temporarily assigned Austro-Hungarian numbers when they operated in the Mediterranean.