In Louis' photo with the list of Falklands ships, the one listed directly below QE2 (which was probably the shortest-serving ship in the campaign except for those that were sunk), the 'tev Rangatira' (built by Swann Hunter, 1971), was the longest serving ship in the campaign - she was away from Falmouth for 16 months, and, while in the Falklands, did not berth alongside a wharf anywhere during that time. She would up-anchor and steam out to sea for refuelling and to fire off a few rounds from the armament to keep the troops awake, then steam back into the anchorage to continue her job as a hostel for the troops while new barracks were being built ashore.
She was built as an overnight ferry for the NZ Interisland run, where she was operated by the NZ Union Steamship Company for 4 years, then returned to the UK after proving uneconomic to run in it's intended trade.
As an apprentice, I worked on it during the surveys/dockings in 1972-3. A very nice ship to sail on (I did, twice).
Finally broken up in May 2005, she is believed to be the last steam-turbo-electric ferry built.
Cheers
Skilly