Tactical assault derivative developed from the Sea King
HAS.1, with all the AS gear removed (including the radome aft of the main rotor) fixed undercarriage and removal of sponsons for 21 fully equipped troops or Medevac, ground attack or SAR role. Mk1 first flew September 12, 1973.
The Commando Mk.2
first flew January 16, 1975 (as G-17-12), was developed from the Sea King HAS.2, but with Anti-Submarine gear and sponsons removed, leaving a fixed main undercarriage. Flotation bags added to the Sea King HC.4
(as the Commando Mk.2 is known in Royal Navy service) because of likely extensive over water operations.