 SM U @-@ 68 was a Type U 66 submarine or U @-@ boat for the German Imperial Navy ( German : Kaiserliche Marine ) during the First World War . She had been laid down in December 1913 as U @-@ 9 of the U @-@ 7 class for the Austro @-@ Hungarian Navy ( German : Kaiserliche und Königliche Kriegsmarine or K.u. K. Kriegsmarine ) but was sold to Germany , along with the others in her class , in November 1914 . Under German control , the class became known as the U 66 type and the boats were renumbered ; U @-@ 9 became U @-@ 68 , and was redesigned and reconstructed to German specifications . She was launched in June 1915 and commissioned in August . 
