HMS Maidstone was a former Royal Navy ship turned into a prison in Belfast Lough during The Troubles. Its cramped hold, improvised for prisoners after earlier wartime and military uses, confined republican detainees in conditions that made the vessel an emblem of improvised incarceration. It held Gerry Adams briefly in March 1972; the escape of seven prisoners by swimming to shore had already made security aboard the ship especially tight, and its closure soon afterward sent Adams and other prisoners to Long Kesh.

Conversion and Conditions

The five-hundred-foot HMS Maidstone had served during the Second World War as a support vessel for Royal Navy submarines. When The Troubles broke out, it was hastily recommissioned to provide emergency accommodation for two thousand British troops arriving in Belfast. It was then adapted once more, this time as HMP Maidstone, a prison moored at a jetty in Belfast Lough, only twenty feet from land. The successive conversions gave the ship a changing institutional purpose without changing its basic character as a vessel crowded with people and pressed into service at short notice.

Prisoners were held in two bunkhouses below deck. They slept in three-tiered bunks in stuffy, overcrowded spaces where dim light filtered through a few small portholes. One prisoner’s verdict, that the quarters were “not fit for pigs,” expressed the gap between the ship’s formal designation as a prison and the rudimentary conditions inside it. The nearby shore could be seen as a physical limit of the institution: close enough to measure, but separated from the prisoners by water, guards, and the ship’s security arrangements.

Adams’s Imprisonment

In March 1972, armed guards brought Adams aboard after troops had captured him in a dawn raid on a West Belfast home. He had been on the run for months. His arrival joined the ship’s routine of confinement to a moment of political consequence: friends and relatives already held there greeted him warmly, but he soon came to detest the vessel, describing it as a “brutal and oppressive sardine tin.” The contrast between that welcome and his revulsion captures the ship’s double character as a place of republican fellowship and coercive confinement.

Adams’s stay was brief, but the Maidstone formed one stage in a sequence of detention. Not long after he arrived, the authorities decided to close the ship because a new prison at the airfield outside Belfast had been completed. Adams was handcuffed to another prisoner, put aboard an army helicopter, and flown to Long Kesh. The transfer changed his location, not the fact of his imprisonment; the improvised ship was replaced by a purpose-built facility on a desolate plain.

The Escape and Its Aftermath

The Maidstone’s security had a recent and dramatic history. On a frigid January evening, seven republican prisoners escaped by cutting through an iron bar, squeezing through a porthole, and swimming several hundred yards across the Musgrave Channel. They had watched a seal negotiate the barbed-wire netting around the ship and developed their plan from what they observed. Before entering the water, they had stripped to their underwear and covered themselves with butter and black boot polish as protection against the cold.

All seven reached the opposite shore. Still wet and smeared with polish, they hijacked a bus; one of the escapees had driven buses before joining the Irish Republican Army and took the wheel toward central Belfast. In a neighbourhood with many republican sympathisers, local children began stripping parts from the bus. The fugitives then went into a nearby pub, where patrons responded to the men’s near-naked appearance by giving them clothes. One patron tossed them his car keys and told them, “Away youse go.” The episode turned escape into a chain of improvised assistance, from the seal that suggested a route through the netting to the residents who helped the men leave.

By the time the army had mobilised six hundred troops for a manhunt, the escapees had disappeared. After crossing the border, they held a press conference in Dublin, and newspapers named them the Magnificent Seven. Their escape helps explain the bitterness and particularly tight security reported aboard the Maidstone when Adams arrived a couple of months later. The ship’s closeness to land, which made it seem almost connected to the shore, had not prevented seven prisoners from reaching it.

Closure and Significance

The Maidstone’s closure followed the completion of Long Kesh, and Adams’s helicopter transfer marked the practical end of the ship’s role in his imprisonment. The move from bunkhouses beneath a deck to corrugated huts surrounded by fences, floodlights, and sentry towers changed the landscape of detention. For Adams, the stay aboard the ship was therefore a short interval between capture and confinement at the new prison; for the prison’s history, it belonged to a rapid succession of uses imposed on an existing vessel.

The ship’s story is shaped by the tension between enclosure and proximity. Its prisoners were held below deck in dim, overcrowded quarters, yet the jetty lay twenty feet from land; the barbed-wire netting was meant to secure the water, yet seven men found a way through it. The Maidstone was neither a purpose-built prison nor an isolated fortress, but an available ship converted into both accommodation and confinement. Its temporary function ended when Long Kesh opened, while its escape and its brief imprisonment of Adams made it a consequential setting in the wider account of republican detention.