HMS Cairo: Lost Defending the Convoy That Saved Malta

HMS Cairo

A Cruiser Built for One War, Fought in Another

HMS Cairo was built by Cammell Laird at Birkenhead, her keel laid on 28 November 1917 and launched on 19 November 1918, just eight days after the armistice that ended the First World War, and commissioned on 24 September 1919. A C-class light cruiser of the Carlisle group, she carried five 6-inch guns as originally built, along with anti-aircraft guns and eight 21-inch torpedo tubes, driven by Parsons geared turbines producing 40,000 shaft horsepower. She served on the China Station in 1920, the East Indies Station between 1921 and 1925, and as a Mediterranean flagship between 1928 and 1930, a solid if unremarkable interwar career.

Converted for the Air War

In 1939, as the growing threat of air power reshaped naval priorities, HMS Cairo was converted to an anti-aircraft cruiser, her armament rebalanced to give her the dedicated capability to defend convoys and fleets against increasingly dangerous air attack. On 28 May 1940, she was damaged by German aircraft off Narvik during the Norwegian campaign, an attack that killed ten of her sailors, a sobering early demonstration of exactly the kind of threat her conversion had been designed to counter.

Fighting Through to Malta

HMS Cairo went on to lead the escort for Operation Harpoon, a convoy fighting its way through to the besieged island of Malta, during which she was struck by two 6-inch rounds fired from the Italian cruiser Eugenio di Savoia, an engagement that killed two of her crew, a costly reminder of just how fiercely contested the Malta convoy route had become by 1942, as Axis forces sought to starve the island into surrender.

Operation Pedestal, and a Final Loss

HMS Cairo's war ended during Operation Pedestal in August 1942, one of the most desperate and historically significant convoy operations of the entire war, mounted specifically to get vital fuel and supplies through to Malta at a moment when the island's survival hung in the balance. On 12 August 1942, HMS Cairo was torpedoed by the Italian submarine Axum north of Bizerta in Tunisia, and twenty-four of her seamen were killed in the attack. With the ship unable to be saved, and scuttling attempts proving insufficient, the destroyer HMS Derwent finished the task with gunfire, sending HMS Cairo to the bottom. Her loss, alongside those of several other ships during Operation Pedestal, was a heavy price, but the convoy's ultimate, narrow success in getting critically needed supplies through to Malta is widely credited with keeping the island in the war at one of the most precarious moments of the entire Mediterranean campaign, a genuinely consequential sacrifice for a ship whose own career had begun in the final days of an entirely different war a quarter of a century earlier.