Two additional ex-Army Bofors guns reinforced the ship's anti-aircraft suite before she participated in Operation Substance in June 1941. Manchester was torpedoed during this convoy escort mission and while she was being repaired in the United States and Britain, she received three more Oerlikon guns for a total of eight weapons, six of which were positioned in the superstructure, one on the roof of 'X' turret and one on the quarterdeck. Two more ex-Army Bofors guns were added amidships before the ship participated in Operation Pedestal in August 1942. When the repairs were completed in April 1942, her radar suite consisted of a Type 279 early-warning radar, the Type 284 system for her main armament, two Type 285 gunnery radars for the four-inch guns, a Type 273 surface-search radar to replace the Type 286 and probably a pair of Type 282 gunnery radars for the "pom-pom" directors.Waters, pp. 120, 125, 131, 152
