 Five gunboat flotillas were organized by the end of March; I Division was assigned to the fleet command, II Division was stationed in Swinemünde to defend the mouth of the Oder river, III and V Divisions were based in Stralsund to defend the Kubitzer Bodden and the Bay of Greifswald, and IV Division was tasked with defending Peenemünde.On 15 March, Kuhn took "Loreley" and three of the divisions for maneuvers off Rügen.Immediately after the start of the war, the Danish Navy imposed a blockade of Prussia's ports in the Baltic, along with those of the other German states in the North Sea.