 U @-@ 36 was ordered by the Kriegsmarine on 25 March 1935 as part of the German Plan Z and in violation of the Treaty of Versailles . Her keel was laid down in the AG Weser shipyard in Bremen as yard number 559 on 2 March 1936 . After about eight months of construction , she was launched on 4 November 1936 and commissioned on 16 December under the command of Kptlt . Klaus Ewerth . 
