HMS Vidal: The Survey Ship That Claimed a Rock in the Atlantic for Britain

Named for a Pioneering Surveyor

HMS Vidal was named after the nineteenth-century Royal Navy surveyor Alexander Thomas Emeric Vidal, who had mapped much of Africa's coastline and surveyed the remote North Atlantic islet of Rockall long before his namesake ship would make that same rock famous.

Built at Chatham Dockyard, laid down on 5 July 1950, launched on 31 July 1951 and completed on 29 March 1954 at a cost of £1,345,000, Vidal holds the distinction of being the last surface vessel ever built at Chatham, and was the first survey ship specifically designed to carry a helicopter.

Annexing Rockall

Vidal's most memorable achievement came in September 1955, when she carried out the formal annexation of Rockall, a tiny and famously inhospitable islet in the North Atlantic.

On 18 September, Lieutenant-Commander Desmond Scott, a party of Royal Marines and the naturalist James Fisher were helicoptered onto the rock to plant a brass plaque and hoist the Union Flag, officially claiming the territory for Britain in a mission that remains one of the more unusual episodes in postwar naval history.

Diplomacy and Distant Islands

Beyond her survey work, Vidal supported wider diplomatic and scientific efforts, carrying the Chief Hydrographer to Leningrad in 1964 for talks with Soviet counterparts, and transporting scientific personnel to the remote Aldabra Atoll and Diego Garcia in 1967, part of the quiet but notably important work British survey ships carried out across the globe throughout the Cold War.

A Plaque That Outlasted the Ship

The brass plaque Vidal's landing party left on Rockall in 1955 was reportedly still in place as late as 1997, before being found missing after the rock was visited by Greenpeace protesters, a strange little postscript to an already unusual mission.

HMS Vidal herself was broken up at Bruges in June 1976, having spent two decades quietly mapping the world's coastlines after making her one unforgettable claim on a barely habitable Atlantic rock.