the submarine had a maximum surface speed of and a maximum submerged speed of . when submerged, the boat could operate for at ; when surfaced, she could travel at . "u-576" 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 a c/30 anti-aircraft gun. the boat had a complement of between forty-four and sixty men.