UK territory was motivated by worries that it could otherwise be used by "hostile agents" to spy on the future South Uist missile testing range. Early in January 2021, after the UK left the European Union, the Northern Celt, an Irish fishing boat based out of Greencastle, County Donegal, was ordered to leave the 12-nautical-mile zone around Rockall by officers of Marine Scotland. Shipping disasters There have been various disasters on the neighbouring Hasselwood Rock and Helen's Reef (the latter was named in 1830). 1686 – a Spanish, French, or Spanish-French ship ran aground around Rockall. Several men of the crew, Spanish and French, were able to reach St. Kilda in a pinnace and save their lives. Some details of this event were recounted by Martin Martin in his A late voyage to St. Kilda, published in 1698. The ship was perhaps a fishing vessel based in the Bay of Biscay and bound for North Atlantic cod fisheries. 1812 – a survey vessel Leonidas foundered on Helen's Reef. 1824 – Brigantine Helen of Dundee, bound for Quebec, foundered on Helen's Reef with fatalities. 1904 – Danish ship SS Norge foundered on Hasselwood Rock with the loss of more than 635 of its 750 passengers. This led to a proposal by D. & C. Stevenson for an unattended lightship to be moored close to the rock. In popular culture English poet Michael Roberts published a poem "Rockall" in his 1939 collection, Orion Marches. The poem describes a shipwrecked traveler on the rock. In the 1951 novel The Cruel Sea by Nicholas Monsarrat, the island features as the place of the final act of HMS Saltashs war. It is here the ship takes the surrender of two German U-boats on the last day of World War Two in Europe. The 1955 British landing, complete with the trappings such as the hoisting the flag, caused a certain amount of popular amusement, with some seeing it as a sort of farcical end to imperial expansion. The satirists Flanders and Swann sang a successful piece titled "Rockall", playing on the similarity of the word to the vulgar expression "fuck all", meaning "nothing": The fleet set sail for Rockall, Rockall, Rockall, To free the isle of Rockall, From fear of foreign foe. We sped across the planet, To find this lump of granite, One rather startled gannet; In fact, we found Rockall. In The Goon Show