LH - it's not clear from this page whether 846 was still operating Wessex in early 82, but it does say that the squadron started converting onto the SK4 in late 79. Would they a) have taken two different types to the SA, or b) taken 18 months to complete the transition to the SK4?
History : 846 : Naval Air Squadrons : Fleet Air Arm : Operations and Support : Royal Navy
Trivia, but ISTR that that tranche of SK4 was originally destined for Egypt, but HMG withdrew their export licence, or am I dreaming?