HMS Sheffield
Pardon the delay in responding but I have only just seen this thread. As an unfortunate visitor to the hangar on 5 May 82 to collect the 700, Sea Skua live plugs and as many fire fighting sets as we could get into a net, I can assure the curious that WE177 was not present in HMS SHEFFIELD then, or when she sank under tow on 10 May 82.
Three live Sea Skuas remained on the aircraft - safely on deck in HMS HERMES; the 'stbd outer missile' had been damaged and ditched over the side. Both sides of the air weapons magazine were open and only the Mk46 torpedoes remained. A practice WE177 had been transfered, in its container, to a RFA in the vicinity of Ascension Island during the transit down to the Falklands Islands. I hope this helps.