Danny.
The photo in Goofers post is upside down. The accommodation blocks were on the NW of the island.
In '75 there wasn't any resident or detached ASR there, just the MCU.
A local dhoni went missing, and a transiting Herc was pressed into service. I went up in it on a search mission looking for the boat. Para doors open an leaning out. There was a Caribou engine on a pallet IIRC , but we never found the boat.
Strangely there was always a Nimrod there when a Royal went out to the Far East. I got a trip in one and went and did an approach to Diego Garcia.