"Noshiro" was armed with six 152 mm Type 41 guns in three gun turrets. Secondary armament included four 76 mm Type 98 DP guns designed specifically for the class, in two twin turrets amidships. Anti-aircraft weapons included two triple 25 mm AA guns in front of the bridge, and two twin 13 mm mounts near the mast. "Noshiro" also had two quadruple torpedo launchers for Type 93 torpedoes located below the flight deck, with eight reserve torpedoes. The torpedo tubes were mounted on the centerline, as was more common with destroyers, and had a rapid reload system with eight spare torpedoes. Being mounted on the centerline allowed the twin launchers to fire to either port or starboard, meaning that a full eight-torpedo broadside could be fired, whereas a ship with separate port and starboard launchers can only fire half of its torpedoes at a time. Two depth charge rails and 18 depth charges were also installed aft. "Noshiro" was also equipped with two Aichi E13A aircraft and had a flight deck with a 26-foot catapult.