The second of her class, Olmeda came into service in late 1965 as Oleander. As with her sister ships, Olmeda's early service was routine. However, in 1967, the ship had to be renamed from Oleander to Olmeda to avoid confusion with .
In the last action of the Falklands War, Olmeda helped recapture the South Sandwich Islands.
Olmeda had a normal complement consisting 88 Royal Fleet Auxiliary personnel with provision for 40 Royal Navy personnel and she was armed with two 20 mm guns and two Corvus chaff launchers. She was designed to achieve a speed of with a fully loaded displacement of .[1]
The ship had the capability to supply fuel and other liquid cargo to vessels using four pairs of replenishment rigs which were located between the forward and aft superstructures. She was able to carry four types of fuels: Furnace Fuel Oil, Diesel, Avcat and Mogas. Limited supplies of lubricating oils, fresh water and dry stores could also be carried. She could operate Westland Wessex or Westland Sea King helicopters, or other helicopters of similar size, from a hangar and flight deck at the stern.[1]
During the Second Cod War, Olmeda supported Royal Navy ships twice, initially for just under three weeks, from 22 September until 10 October and then a further two weeks from 14 until 27 October.
From 6 February 1975, she was deployed to Cyprus, due to the Turkish invasion, to support and, in support of UN Peace Keeping Force and British interests.[2]
On 5 April she sailed from HMNB Devonport for service during Operation Corporate, the Falklands Conflict, with a Fleet Air Arm Westland Sea King HAS.2 utility helicopter, reg. XV649, embarked, of 824 Naval Air Squadron 'A' Flight.[2]
Olmeda saw extensive service during the Falklands War, being one of the first ships to head south. Olmeda refuelled numerous ships of the Task Force including HMS Hermes, HMS Invincible, and the SS Uganda.
See main article: Operation Keyhole.
After the Argentine surrender of the Falkland Islands, Olmeda,, and the tug Salvageman sailed to the South Sandwich Islands where Argentina had established a base in South Thule since 1976. Following a demonstration of Yarmouths guns, the ten Argentine military personnel surrendered. Before leaving South Thule, Yarmouth was refueled by Olmeda on 21 June, which may have been the most southerly underway replenishment in the history of the Royal Navy.[3]
In July 1994 Olmeda was sold for £1.2m to Singaporean owners and renamed Niaxco. She then sailed under her own power from Portsmouth to Alang Ship Breaking Yard in India, arriving in August. Breaking up commenced on 23 December.