HMS Azalea (K25): The Lone Escort at Slapton Sands

A Corvette Built for Convoy Work
HMS Azalea was a Flower-class corvette built by Cook, Welton and Gemmell of Beverley, laid down on 15 November 1939, launched on 8 July 1940, and commissioned on 27 January 1941. Like most of her class, she spent her early war years on the essential, unglamorous business of convoy escort, and in April 1941 she and the Canadian corvette HMCS Kenogami intercepted the American liner Siboney some 590 kilometres from Lisbon after receiving a radio alert, a routine piece of wartime maritime policing.
The Night Exercise Tiger Went Wrong
Azalea's place in history was secured on the night of 28 April 1944, when she served as the primary escort for Convoy T-4 during Exercise Tiger, a large-scale rehearsal for the D-Day landings taking place off Slapton Sands in Devon. The convoy of eight landing ships was meant to have a second escort, the First World War-vintage destroyer HMS Scimitar, but Scimitar had collided with one of the landing ships earlier and withdrawn to Plymouth for repairs. A replacement, HMS Saladin, was dispatched but failed to arrive in time. Compounding the danger, the American landing ships and the British naval headquarters coordinating the exercise were operating on different radio frequencies, and the American forces involved did not even know this was the case.
Azalea led the convoy in a straight line formation, an arrangement that would later draw considerable criticism for presenting German E-boats with an almost ideal target. Nine E-boats from Cherbourg slipped past British patrols undetected and launched a coordinated torpedo and gunfire attack around 1:30am. Two landing ships were sunk and two more badly damaged, and the disaster killed 749 American servicemen, 551 soldiers and 198 sailors, with many of the deaths caused not by the attack itself but by inadequate lifebelt training and hypothermia in the cold water that followed. It remains one of the most costly training disasters in American military history, a genuinely tragic episode kept secret for years afterward for fear of compromising the coming Normandy invasion, and one in which Azalea, as the only escort actually present when the attack began, found herself at the very centre of events she had no realistic way of preventing alone.
A Quiet Postwar End
Azalea survived the war and was sold out of naval service on 5 April 1946, converted into the merchant ship Norte, which continued trading until she herself sank on 19 January 1955, a quiet, almost anonymous end for a ship whose single most significant night had been anything but quiet.