HMS Orchis (K76): The First Radar-Equipped Corvette, Sunk on Juno Beach a Week After Her Finest Hour

HMS Orchis (K76)

The First of Her Kind

HMS Orchis was built by Harland and Wolff and commissioned in March 1941, a Flower-class corvette that earned a genuinely significant place in naval technological history: she was the first ship ever fitted with the new Type 271 radar, a centimetric set capable of detecting a surfaced submarine at 5,000 yards and even a submarine's periscope at 1,300 yards, a genuinely revolutionary leap in capability that transformed the Royal Navy's ability to detect U-boats at night or in poor visibility, conditions under which submarines had previously enjoyed a considerable advantage.

Escorting the Atlantic Convoys

HMS Orchis initially served with the 4th Escort Group based at Greenock, before transferring to Escort Group B3 of the Mid-Ocean Escort Force through early 1944, escorting Convoy ONS 18 during some of the fiercest fighting of the entire Battle of the Atlantic, exactly the kind of gruelling, high-stakes convoy work her pioneering radar had been designed to make safer.

Sinking U-741

HMS Orchis was reassigned to English Channel patrol duties as the focus of the naval war shifted towards supporting the Normandy invasion, and on 15 August 1944 achieved a genuine and confirmed success, sinking the German submarine U-741 using sonar contact followed by Hedgehog attacks and depth charges, a textbook demonstration of exactly the kind of detection-to-destruction sequence her class had been built to carry out. She rescued one survivor from the U-boat's aft torpedo room, a small mercy amid the violence of the engagement.

Lost to a Mine Off Juno Beach

HMS Orchis met her own end less than a week later, on 21 August 1944, when she struck a naval mine that destroyed her bow section. She was beached on Juno Beach, one of the Normandy invasion beaches assaulted by Canadian forces on D-Day some ten weeks earlier, and was declared a total loss, a genuinely painful and swift reversal of fortune for a corvette that had, only days before, scored one of the more satisfying confirmed kills of her entire wartime career.