for the administration of various German ship classes to include equipment development, vessel deployments, and personnel assignment. Once at sea, operational control of the vessels switched to the commanders of the two main Naval Sea Stations. The four type commands were: Befehlshaber der Linienschiffe – Commander of Ships of the Line, headquartered at Kiel, the flagship in 1933 was the cruiser Deutschland Befehlshaber der Aufklärungsstreitkräfte – Commander of Reconnaissance Craft, flagship was the cruiser Königsberg headquartered at Kiel Führer der Torpedoboote – Leader of Torpedo-boats, headquartered at Swinemünde overseeing four flotillas of torpedo boats Führer der Minsensuchboote – Leader of Minesweepers, headquartered at Kiel commanding two minesweeper flotillas and one Räumbooten ("R boat") mine auxiliary unit. Naval sea stations The Reichsmarine did not maintain traditional at-sea fleets, but instead assigned two geographical areas (known as Marinestation) which oversaw all vessels operationally deployed in the North and Baltic Seas. Each naval station maintained a headquarters staff, general naval inspectorate, training department, artillery arsenal inspector, as well as a medical command unit. The naval stations also served as a senior officer for the commanders of the various German navy ports. Naval stations of the Reichsmarine Marinestation der Nordsee (North Sea naval station) – headquartered at Wilhelmshaven, overseeing the ports of Cuxhaven and Borkum Marinestation der Ostsee (Baltic Sea naval station) – headquartered at Kiel, overseeing the ports of Swinemünde and Pillau Ships and equipment The Treaty of Versailles limited the size and armament of the Reichsmarine and prevented it from introducing new technologies. The restrictions were intended to prevent the German Navy from becoming a threat to the Allied powers. On the other hand, the Allies had made certain that the Reichsmarine would be in the foreseeable future the strongest power in the Baltic Sea, in order to serve as a counterweight against the new Soviet Union, which was viewed with distrust by the Allies. Germany was only allowed six pre-dreadnought battleships (plus two in Reserve), six cruisers (plus two in Reserve), twelve destroyers (plus four in Reserve), and twelve torpedo boats (plus four in Reserve). The Reichsmarine tried to meet the arms restrictions with secret armament and technical innovations such as the introduction of the pocket battleship. List of Reichsmarine ships s (1907–1944) (1908–1945) (1908-1944) s (1904–1932) (1904–1936) (1905–1960) (1905-1931) (1906-1931) s (1904–1927) (1906-1929) s (3,033 tons, 10 × 105 mm guns) (1900–1925) (1900–1931) (1901–1929) (1901–1931) (1901–1945) (1903–1945) Emden-class cruiser (6,000