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|first flight=
|introduction= 1963<ref>[http://www.cbc.ca/news/background/cdnmilitary/seaking.html Requiem for the Sea King.] Retrieved on November 17, 2008.</ref>
|retired=1 December 2018<ref>[http://skr18.ca/wp-content/uploads/2018/07/RCN-paint-article.pdf Going out with Style ]</ref><ref name="JanesRetired">{{cite web |last1=Jennings |first1=Gareth |title=Canada retires Sea King after 55 years |url=https://www.janes.com/article/85291/canada-retires-sea-king-after-55-years |website=IHS Jane's 360 |
|status=
|primary user= [[Canadian Armed Forces]]
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Despite this apparent setback for Sikorsky, several factors would derail the Kaman proposal. When the Naval Board held a follow-up meeting on 27 January 1961 to discuss the program, it was revealed that the asking price for the initial 12 units had nearly doubled to $23 million, a mere 6 weeks after the Treasury Board had approved the purchase. The Naval Board continued to endorse the HU2K, but some RCN leaders had serious misgivings due to the drastic price increase and staff reports that Kaman's performance projections might be overly optimistic. The Naval Board decided to await upcoming USN sea trials of the HU2K before rendering a final decision.<ref>Soward 1995, pp.244–246.</ref> The USN trials confirmed the calculations of RCN staff members; the HU2K was substantially heavier than promised, hampering its flight performance and rendering it incapable of meeting RCN requirements, even if Kaman were to install a proposed upgraded engine. The Sea King was ultimately chosen for production on 20 December 1961.<ref>Soward 1995, pp.261–262.</ref>
The first of 41 helicopters would be delivered in 1963 carrying the designation '''CHSS-2 Sea King'''. The airframe components were made by [[Sikorsky Aircraft|Sikorsky]] in Connecticut but most CHSS-2s were assembled in [[Longueuil, Quebec]], by United Aircraft of Canada (now [[Pratt & Whitney Canada]]), a subsidiary of Sikorsky's parent company, [[United Aircraft]]. On 27 November 1963, the new landing platform aboard {{HMCS|Assiniboine|DDH 234|6}} was used for the first operational destroyer landing of a production CHSS-2.<ref>Soward 1995, pg. 326.</ref> Upon the unification of Canada's military in 1968, the CHSS-2 was re-designated '''CH-124'''.<ref name="CSAR variants">{{cite web |url=https://www.sfu.ca/casr/bg-helo-ch124-variants.htm |title=CH-124 Sea King Variants |
In the 1960s,<ref name=lisa>Gordon, Lisa, [http://www.verticalmag.com/features/features_article/The-king-at-sea#.UqiykNLuIqY The King at Sea]" ''Vertical Magazine'', 9 December 2013. Accessed: 11 December 2013.</ref> the RCN developed a technique for landing the huge helicopters on small ship decks, using a 'hauldown' winch (called a "[[Beartrap (helicopter device)|Beartrap]]"),<ref>{{cite web|url=http://www.hazegray.org/navhist/canada/current/seaking/|title=Haze Gray & Underway – The Canadian Navy of Yesterday & Today – Sea King}}</ref> earning aircrews the nickname of "Crazy Canucks".<ref name=autogenerated4>{{cite news|url=http://www.cbc.ca/news/background/cdnmilitary/seaking.html|title=CBC News In Depth: Canada's Military | date=1 February 2006}}</ref> The Beartrap allows recovery of the Sea King in virtually any [[sea state]].<ref>{{cite web|url=http://geocities.com/CapeCanaveral/9411/fraser/class/|archive-url=https://web.archive.org/web/20091027010245/http://geocities.com/CapeCanaveral/9411/fraser/class/|url-status=dead|archive-date=27 October 2009|title=ST. LAURENT Class History|date=27 October 2009|
==Operational service==
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In 2013 the CH-124 fleet averaged 9–14,000 flying hours, while Sea Kings of other fleets go as high as 40,000 hours. Although the CH-124 had frequent technical issues, none are serious, and they could maintain an 87 percent serviceability rate.<ref name=lisa/>
On 1 December 2018, the CH-124 was officially retired in a ceremony at Vancouver Island, British Columbia, concluding 55 years of service. Of the surviving 28 Canadian Sea Kings, nine are destined for museums or to be displayed as monuments, 15 are to be sold, three scrapped, and one retained as a training aid.<ref>{{cite web|url=https://www.defensemedianetwork.com/stories/canada-retires-sea-king-50-years/|title=Canada Retires Sea King After More Than 50 Years of Service|website=Defense Media Network|
===Replacement===
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==Former operators==
''NOTE: Last aircraft was retired in December 2018''<ref name="RCAF.com">[http://rcaf.com/Aircraft/aircraftDetail.php?SEA-KING-179 Sikorsky CH-124 Sea King]</ref><ref name="rcaf-arc.forces.gc.ca">{{cite web|url=http://www.rcaf-arc.forces.gc.ca/en/article-template-standard.page?doc=final-farewell-to-the-sea-king/jovmrvi0|title=News Article - Final farewell to the Sea King|first=National Defence|last=Government of Canada|date=1 December 2018|website=www.rcaf-arc.forces.gc.ca|
;{{CAN}}
* [[Royal Canadian Navy]]<ref name="RCAF.com" />
* [[Royal Canadian Air Force]]<ref name="RCAF.com" />
** [[443 Maritime Helicopter Squadron]]<ref>{{cite web|url= http://www.canadianwings.com/Squadrons/squadronDetail.php?No.-443-Squadron-99|title= No. 443 Squadron |publisher= canadianwings.com |
** [[406 Maritime Operational Training Squadron]]<ref>{{cite web|url= http://www.canadianwings.com/Squadrons/squadronDetail.php?No.-406-Squadron-65|title= No. 406 Squadron |publisher= canadianwings.com |
** [[423 Maritime Helicopter Squadron]]<ref>{{cite web |url= http://www.rcaf-arc.forces.gc.ca/12w-12e/sqns-escs/page-eng.asp?id=465 |title= 423 Maritime Helicopter Squadron |publisher= rcaf-arc.forces.gc.ca |
==Specifications (CH-124 Sea King)==
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|rot area sqft=3019.5
|rot area note=<br>
*'''Blade section:''' - [[NACA airfoil|NACA 0012]]<ref name="Selig">{{cite web |last1=Lednicer |first1=David |title=The Incomplete Guide to Airfoil Usage |url=https://m-selig.ae.illinois.edu/ads/aircraft.html |website=m-selig.ae.illinois.edu |
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