 The "Restigouche"s diverged from the "St. Laurent"s in their weaponry.The "Restigouche"s were equipped with two twin mounts of Vickers /70 calibre Mk 6 dual-purpose guns forward and maintained a single twin mount of 3-inch/50 calibre Mk 22 guns aft used in the preceding class.A Mk 69 fire control director was added to control the new guns.