 The boat had a complement of forty-eight.Built by the large DeSchiMAG AG Weser shipyards in Bremen, "U-844" was rapidly completed and readied for service, her entire building program taking just under a year.Given to "Oberleutnant zur See" Günther Möller, she passed her initial working-up and training schedule well, and was dispatched to her first patrol in the Atlantic Ocean in the first week of October 1943 to try to stem the terrible losses being incurred by U-boats at this time.