 Three survived the war and were seized by the Allies as war reparations.Only the Soviet Union actually made use of its vessel and it was eventually used as a test ship before being scuttled during the 1950s.The 1930 London Naval Treaty had a clause that ships below standard displacement did not count against the national tonnage limits, so the "Kriegsmarine" attempted to design a high-speed, ocean-going torpedo boat with a maximum displacement of 600 long tons.