The Flower-class corvette Aconit (K58), originally HMS Aconite, was one of nine corvettes loaned by the Royal Navy to the Free French Naval Forces during World War II. Built in Troon, Scotland, and commissioned in July 1941, she played a key role in the Battle of the Atlantic, escorting 116 convoys and spending 728 days at sea. Aconit became one of the most famous FNFL vessels in a single day – 11 March 1943 – when she sank two German U-boats, U-444 and U-432, while escorting convoy HX 228, which fell prey to a wolfpack of nine U-boats. For her valour, she received the Croix de la Libération and the Croix de Guerre. She later participated in the Normandy landings before being returned to the Royal Navy in 1947. Rebuilt as a whaling ship, she operated under various companies until her scrapping in Belgium in 1967.

Aconit was introduced in Update "Hornet's Sting". She is a highly durable vessel for her BR, capable of withstanding concentrated firepower from multiple machine guns and even some autocannons. She also possesses relatively capable anti-air armament, posing a serious threat not only to aircraft but also to coastal vessels, particularly motor torpedo boats. She excels in asserting dominance over capture points but struggles with manoeuvring in tight spaces and dealing with torpedoes or artillery strikes. Overall, she can be a formidable vessel when making effective use of manual control over her secondary and anti-aircraft guns.