U-228 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 an anti-aircraft gun.
The U-228 had a total of five torpedo launchers, including four forward and one aft, as well as a single  SK C/35 naval gun with 220 rounds, plus an anti-aircraft weapon.