I imagine that many people on this forum will either not know or have forgotten, that the RFA kept some of the STUFTs (Ships Taken Up From Trade) and incorporated them into the fleet. The "Leaf" class of tankers, "Diligence", "Argus" and "Reliant" were the main acquisitions.
"Reliant" was originally a container ship in Harrisons fleet (I've forgotten her original name), but she was both interesting and short lived within the RFA. She was re-configured as a sort of aircraft carrier for helicopters (although I think she may also have been Harrier capable...I could be wrong there). The Americans had come up with this notion and called it "Arapaho". Basically a containerised "quick fit" emergency solution. Containers were fitted out as store rooms, accomodation, workshops etc. It still sounds like an interesting concept...especially when the size and speed of modern container ships is taken into account. Except that we have no more fixed wing aircraft to deploy to one.
The 1st photo is "Reliant" alongside "Scottish Eagle" in San Carlos.
The 2nd is just a more general view of her.
I also haven't a clue what happened to her. "Here one day, gone the next"!