Editing HMCS Haida (section)

=== Cold War operations ===
[[File:USS BUCK ammo transfer to HMCS HAIDA off Korea.jpg|thumb|left|{{USS|Buck|DD-761|6}} transferring four-inch ammunition to ''Haida'']]
''Haida'' was in inactive reserve for approximately one year but was prepared for reactivation in 1947 and underwent a refit for updated armament and sensors. This involved replacing the main armament, with the 4.7-inch guns removed and two twin Mk XVI 4-inch gun mounts installed forward and a twin [[3"/50 caliber gun|{{convert|3|in|mm|adj=on|0}}/50 calibre gun]] mount installed aft.<ref group=note>The 50 [[Caliber (artillery)|calibre]] denotes the length of the gun. This means that the length of the gun barrel is 50 times the bore diameter.</ref> The ship was given a Mk 63 fire control director for its guns. One turret was completely removed and replaced by two [[Squid (weapon)|Squid]] anti-submarine mortars placed on the [[quarterdeck]]. A short aluminum [[Mast (sailing)|mast]] was installed and the [[funnel (ship)|funnels]] were fitted with caps.<ref name=gardiner>Gardiner and Chumbley, p. 41</ref>

''Haida'' was equipped with Type 275, SPS-10, SPS-6, Type 293 and 262 radars and Type 140 and 174 sonars.<ref name=gardiner/> While in refit, fire gutted the [[Bridge (nautical)|wheelhouse]] and boiler tubes burst later during speed trials. She returned to the fleet, still carrying the pennant number G63, in May 1947.

''Haida'' and her sister ship {{HMCS|Nootka|R96|6}} participated in exercises between the RCN's Atlantic Fleet and the [[United States Navy]] and Royal Navy over the next several years and were the first RCN ships to penetrate [[Hudson Bay]] in Fall 1948.<ref>{{cite magazine|title=Plenty of Seatime |magazine=The Crowsnest |publisher=King's Printer |location=Ottawa |number=1 |volume=1 |date=November 1948 |pages=2}}</ref> ''Haida'' was involved in assisting during the grounding of the aircraft carrier {{HMCS|Magnificent|CVL 21|6}} off [[Port Mouton, Nova Scotia]] on 4 June 1949. In November 1949, ''Haida'' rescued the 18 members of the crew of a [[United States Air Force]] [[B-29]] bomber that crashed in the Atlantic Ocean.<ref>{{cite magazine|title=''Haida'' Rescues Airmen Downed in the Atlantic |magazine=The Crowsnest |publisher=King's Printer |location=Ottawa |date=December 1949 |number=2 |volume=2 |pages=2}}</ref> That December, ''Haida'' was downgraded to a depot and accommodation ship in Halifax.

When the Korean War started on 25 June 1950, ''Haida'' was once again activated for war duty. She was converted to a [[destroyer escort]] and began refit in July 1950, with various new armaments, sensors and communications systems. She was recommissioned on 15 March 1952 and carried the pennant DDE 215. She departed Halifax on 27 September for [[United States Fleet Activities Sasebo|Sasebo]], Japan, arriving there on 6 November after passing through the [[Panama Canal]].<ref name=thorgrimsson141>Thorgrimsson and Russell, p. 141</ref>

''Haida'' relieved ''Nootka'' on 18 November off the west coast of Korea, and had an uneventful patrol, performing aircraft carrier screening and inshore patrol missions, returning to Sasebo to replenish on 29 November. She patrolled off the east coast of Korea beginning on 4 December and took part with the destroyer escort {{USS|Moore|DE-240|6}} in shelling of a railway yard in [[Songjin]], a coastal battery, and North Korean troops. On 18–19 December, ''Haida'' failed to join the exclusive "Trainbusters Club" when an enemy train she attacked managed to hide in a nearby tunnel.<ref>Thorgrimsson and Russell, pp. 114, 121</ref> ''Haida'' returned to patrol on 3 January 1953, escorting aircraft carriers and bombarding the coast. On 29 January, ''Haida'' entered the "[[Trainbusters Club]]", destroying a train north of [[Riwon]]. The destroyer eliminated a second train on 26 May, and detonated a drifting [[Naval mine|anti-ship mine]] on her return to [[Baengnyeongdo|Paengyang-do]].<ref>Thorgrimsson and Russell, p. 125</ref> She departed Sasebo on 12 June, heading west through the [[Suez Canal]] and arrived in Halifax on 22 July 1953.<ref name=thorgrimsson141/>

''Haida'' departed Halifax for a second Korean tour on 14 December 1953, passing through the Panama Canal and arriving in theatre on 5 February 1954.  North Korea and China were not respecting the [[cease fire]]; infractions necessitated a naval presence around South Korea. The destroyer departed the Korean theatre on 12 September 1954 and headed for Halifax via the Suez Canal once again, arriving on 1 November.<ref name=thorgrimsson141/>

Following the Korean operations, ''Haida'' embarked on Cold War anti-submarine warfare duties with other [[NATO]] units in the North Atlantic and [[West Indies]]. In May 1956, ''Haida'', accompanied by ''Iroquois'' and ''Huron'' made port visits to cities and towns along the [[Saint Lawrence River]].<ref>{{cite magazine |title=HMCS Haida |magazine=The Crowsnest |publisher=Queen's Printer |location=Ottawa |date=July 1956 |volume=8 |number=9 |pages=18}}</ref>

''Haida''{{'}}s aging hull and infrastructure was becoming troublesome, and in January 1958 she went into refit for hull repairs and protection for electronic equipment. Further refits in 1959 corrected various problems, and she sailed for the West Indies in January 1960; however, further equipment failures culminating in the failure of her steering gear on 3 April forced her to return to Halifax. A hull survey in May found extensive corrosion and cracking, forcing her into drydock for the remainder of the year. She undertook further repairs in June and July 1961 after further cracking was found during operations in heavy seas that March. More cracks were detected in March 1962, which forced a refit through February 1963.