page_title: Sikorsky CH-124 Sea King
section_title: Variants
hierarchical_section_title: Sikorsky CH-124 Sea King / Variants
caption_attribution_description: English: A en:Sikorsky CH-124 Sea King in St Hubert, Quebec, in 1986. Rotor blades are folded for storage.
context_page_description: The Sikorsky CH-124 Sea King is a twin-engined anti-submarine warfare helicopter designed for shipboard use by Canadian naval forces, based on the US Navy's SH-3. It served with the Royal Canadian Navy and Canadian Armed Forces from 1963 to 2018.
context_section_description: CH-124
  Anti-submarine warfare helicopter for the Royal Canadian Navy (41 assembled by United Aircraft of Canada).
  CH-124A
  The Sea King Improvement Program (SKIP) added modernized avionics as well as improved safety features.
  CH-124B
  Alternate version of the CH-124A without a dipping sonar but formerly with a MAD sensor and additional storage for deployable stores. In 2006, the five aircraft of this variant were converted to support the Standing Contingency Task Force (SCTF), and were modified with additional troop seats, and frequency agile radios. Plans to add fast-rope capability, EAPSNIPS (Engine Air Particle Separator / Snow & Ice Particle Separator) did not come to fruition.
  CH-124B2
  Six CH-124Bs were upgraded to the CH-124B2 standard in 1991–1992. The revised CH-124B2 retained the sonobuoy processing gear to passively detect submarines but, the aircraft was now also fitted with a towed-array sonar to supplement the ship's sonar. Since anti-submarine warfare is no longer a major priority within the Canadian Forces, the CH-124B2 were refitted again to become improvised troop carriers for the newly formed Standing Contingency Task Force.
  CH-124C
  One CH-124 operated by the Helicopter Operational Test and Evaluation Facility located at CFB Shearwater. Used for testing new gear, and when not testing new gear, it is deployable to any Canadian Forces ship requiring a helicopter.
  CH-124U
  Unofficial designation for four CH-124s that were modified for passenger/freight transport. One crashed in 1973, and the survivors were later refitted to become CH-124As.
caption: Sikorsky CH-124A Sea King with blades folded for storage.
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