HMS Ariadne (F72): The Very Last Leander Off the Slipway

Closing Out a Famous Class

HMS Ariadne was laid down at Yarrow's Scotstoun shipyard on 1 November 1969, one of the final two ships of the Leander class ever built. Launched on 10 September 1971 and commissioned at Devonport on 2 March 1973, she holds the small but genuine distinction of being the very last Leander-class frigate completed for the Royal Navy, closing out a production run that had shaped a whole generation of British frigate design.

She also holds a quieter engineering distinction, commonly cited as the last warship built for the Royal Navy to be powered by steam turbines, closing out an era of propulsion that had defined the fleet for the best part of a century.

That second distinction is much the bigger of the two, and it deserves more than a line. Steam had driven the Royal Navy since before the First World War, and a Leander carried the Y-100 plant: two boilers, geared turbines, and a large engine room department to run and maintain the lot. A steam warship cannot simply be started. Raising steam from cold takes hours, and keeping the plant available means keeping people in the boiler and engine rooms around the clock. A gas turbine goes from cold to full power in a few minutes and needs a fraction of the men. That, rather than any question of speed or efficiency, is why the Navy changed over, and it is why Ariadne is the last of the line.

It is worth noticing what that meant for the people aboard. A steam frigate needed a big, highly skilled engineering department living in the hottest and noisiest part of the ship, and the change to gas turbines removed a great many of those jobs and a great deal of that expertise from the fleet within a single generation. Ariadne commissioned in 1973 with stokers and boiler room watchkeepers doing a job that had existed continuously since the age of coal. Nobody in the Royal Navy does it now.

A Batch 3 broadbeam Leander, she displaced just under 3,000 tons fully loaded and carried twin 4.5-inch guns, Sea Cat missiles, a Limbo anti-submarine mortar and a Westland Wasp helicopter, with a crew of around 260.

The name is one of the older ones in the Navy List and it is worth knowing what it means, because it is oddly apt for a ship that spent her last years teaching. Ariadne was the daughter of Minos, king of Crete, and her whole contribution to the story is a ball of thread. Theseus went into the labyrinth to kill the Minotaur; anybody could do that part, and several had tried; the difficulty was that nobody who went in ever found the way out again. Ariadne gave him the thread, he tied one end at the entrance, and that is why he came back. She is the patron, in other words, not of courage but of navigation, of the unglamorous business of knowing where you are and how to return. For a frigate whose final job was teaching young officers to keep a watch and work out a position, the Admiralty could hardly have done better if it had tried.

Straight Into the Cod Wars

Ariadne's active career began almost immediately with fishery protection patrols during the Second Cod War with Iceland in 1973, a suitably eventful introduction for a brand-new frigate.

She followed this with a nine-month Far East deployment in 1974 and 1975, sailing out alongside HMS Scylla, HMS Londonderry, HMS Apollo, HMS Danae, HMS Argonaut and three Royal Fleet Auxiliary support ships, a deployment that included duty on the Beira Patrol, enforcing the oil embargo against Rhodesia, before taking part in the 1977 Silver Jubilee Fleet Review and being appointed Belize guardship, protecting the small Central American territory during a period of tension with neighbouring Guatemala.

The Belize posting sounds decorative and was nothing of the kind. British Honduras, renamed Belize in 1973, was claimed in its entirety by Guatemala, which has a border with it and an army several times the size of anything the colony could raise. Guatemala threatened invasion in November 1975 and again in July 1977, and on both occasions Britain reinforced: the garrison had grown from about seven hundred and fifty men in 1970 to some fifteen hundred by the middle of the decade, and from 1975 it included a detachment of RAF Harriers, which were sent because they could operate from a strip in the jungle and be seen doing it. The guardship was the seaward end of the same argument. A frigate sitting off Belize City was the visible, deniable-by-nobody signal that an invasion would be a war with Britain, and Ariadne drew that job in the immediate aftermath of the 1977 crisis.

It was not a bluff that anybody was ever quite willing to test, and it went on a very long time. Belize became independent on 21 September 1981 and Britain agreed to keep troops there anyway, renewing the assurance in 1984, because the Guatemalan claim did not go away with the flag. Nor did the friction: in November 1988 a Guatemalan gunboat opened fire on an unarmed British naval vessel in the disputed waters of the Gulf of Honduras. It is a strange corner of the Cold War, a Central American territorial dispute defended for decades by British infantry, Harriers and a rotating succession of frigates, and it never once became a war. Which, from the point of view of the deterrent, is the entire point.

NATO Duty and a Soviet Shadow

From 1979 Ariadne served with NATO's Standing Naval Force Atlantic, and from 1981 onward took up West Indies Guard Ship duties, the kind of steady global presence work that characterised much of the frigate fleet's later Cold War career.

In 1983 she had a rather more pointed assignment off Ireland, shadowing the Soviet cruiser Slava, commissioned barely a year earlier and still very much a novelty to Western navies keeping tabs on the latest Soviet hardware, part of the constant, watchful game of naval cat-and-mouse that defined so much of the era's maritime tension without ever quite tipping into open conflict.

The ship she was shadowing turned out to matter rather more than anyone could have known at the time. Slava was the first of a new class of Soviet guided missile cruisers, eleven and a half thousand tons, commissioned at the very end of 1982 and built around sixteen enormous anti-ship missiles carried in angled launchers along her sides, each one roughly the size of a telegraph pole. Western navies wanted a very close look at her, which is what a frigate off the Irish coast in 1983 was for: get alongside, photograph everything, record every emission, and go home.

She had a long afterlife too. Slava was renamed Moskva in 1995, refitted, and became the flagship of the Russian Black Sea Fleet. On 13 April 2022 she was hit off the Ukrainian coast, caught fire, and sank under tow the following day, the largest warship lost in action anywhere in the world since 1982. The frigate that spent a few days tailing her off Ireland had been sunk as a target eighteen years before that, and the cruiser she was watching outlived the Soviet Union, the Cold War and Ariadne herself by four decades.

A Fitting Send-Off

Having joined the 6th Frigate Squadron in 1987, in 1989 Ariadne replaced HMS Juno in the Dartmouth Training Squadron, taking on the role of training future Royal Navy officers, and in 1990 took part in Endeavour 90, a circumnavigation covering some 32,000 miles, a notably fitting final adventure for the last of a class that had itself circled the globe many times over during its long service life.

The Dartmouth Training Squadron is worth explaining as well. Officer cadets at Britannia Royal Naval College need to go to sea in a real warship, doing real watchkeeping, navigation and boat work, and for decades the Navy kept a small squadron of ships specifically to give them that: proper commissioned warships with a permanent crew and a rotating population of very green young officers learning their trade. Ariadne took over from HMS Juno in 1989 and spent her last three years in the Royal Navy teaching. It is a good final posting for the last of a class, and Endeavour 90, thirty-two thousand miles round the world with a shipload of cadets aboard, is about as fine a way to finish as the Navy could have arranged.

She was decommissioned in May 1992 and sold to Chile, recommissioned as General Baquedano, named for the nineteenth-century Chilean general Manuel Baquedano, serving the Chilean Navy until her own decommissioning in December 1998, and was finally sunk as a target in 2004, bringing to a definitive close the story of the last Leander-class frigate ever built.