 "U-470" was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one SK C/35 naval gun, 220 rounds, and one twin C/30 anti-aircraft gun.The boat had a complement of between forty-four and sixty.Built by the Deutsche Werke shipyards in Kiel, "U-470" took a long time to complete, not being ready for initial working-up operations until a year after her construction began.