French Flower-class corvettes were those ships of the built for, or operated by, the French Navy and Free French Naval Forces in World War II. At the outbreak of the war, four anti-submarine warfare ships were ordered from a British shipyard, and a further 18 ships were later ordered from several British and French shipyards. Following the Fall of France in June 1940, the ships in Britain were taken over by the Royal Navy, while those in France fell into German hands. Eight other Flowers were later transferred to the Free French Naval Forces.

Construction history At the outbreak of World War II the Marine nationale (French Navy) needed ships for anti-submarine warfare (ASW) and, following the Royal Navy's example, placed orders from Smiths Dock in South Bank, Middlesbrough, for four ASW corvettes. Smiths had developed plans for a basic ASW vessel, using merchant ship equipment and machinery, that could be mass-produced in Merchant shipyards.

Following this the Marine nationale ordered a further 18 ships, to be built at a number of British and French shipyards. These were identical to the British "Flowers" except that French and 13.2 mm AA guns were to be fitted.

The Fall of France in June 1940 brought a drastic change to these building programmes. Of the original four, only one, La Bastiaise, was completed. On 22 June 1940, the day of France's capitulation, she was undergoing sea trials in the North Sea when she struck a mine off Hartlepool and sank. Of the others, La Malouine was taken over as she was by the Royal Navy (RN) on completion, while the other two were taken over and renamed.

Of the second order, the 12 ships under construction in Britain were taken over by the RN; all were renamed and given Flower names in keeping with the class.

The six ships under construction in France all fell into German hands. Building continued slowly, and by 1944, three had been completed for use by the German Kriegsmarine. These ships underwent a number of changes to reflect changes in role and circumstances. They were rated as patrol gunboats and commissioned as PA 1 to 4.

After the creation of the Free French Naval Forces (FNFL) the RN transferred a number of ships to the FNFL. These included eight Flowers, all transferred and renamed on completion. Some retained a Flower name while others took the names that honoured French naval heroes.

These ships, in French and in British service, saw action throughout the Atlantic campaign and performed sterling work. Two of the French, and one of the British vessels were lost in action, while three of them, two French and one British, were successful in sinking U-boats.

Losses , mined in North Sea, 22 June 1940 (on trials). The engineer manager of Smith's Dock and several of his staff were lost with the ship.David K. Brown, Atlantic Escorts, Seaforth Publishing, 2022. La Dieppoise / , torpedoed and sunk by , 14 October 1941. , torpedoed and sunk by on 10 February 1942 while escorting convoy ON 60, approximately east of Cape Race at . 36 crew were killed. , torpedoed and sunk on 9 June 1942 by while escorting convoy ONS 100 at . 58 French and six British crew were killed; the French crew being largely from Saint Pierre and Miquelon. Four survivors were rescued by .

Successes La Paimpolaise / , and others sank 27 June 1941. sank on 7 February 1943. and others sank and on 11 March 1943.

Ships

French Navy (Marine nationale) + First order Ship Builder Completed Fate La Bastiaise Smiths Dock, South Bank, Middlesbrough 22 June 1940 Sunk by mine, 22 June 1940 La Malouine Smiths Dock 30 July 1940 Transferred to RN as La Dieppoise Smiths Dock 26 August 1940Transferred to RN as La Paimpolaise Smiths Dock 26 September 1940 Transferred to RN as

+ Second order, British yards Ship Builder Completed Fate (J3840) Harland & Wolff, Belfast 3 February 1941 Taken over by RN. Renamed (J3446) Harland & Wolff 13 February 1941 Taken over by RN. Renamed (J3346) Harland & Wolff 6 March 1941 Taken over by RN. Renamed (J3444) Harland & Wolff 30 March 1941 Taken over by RN. Renamed (J3246) Harland & Wolff 11 April 1941 Taken over by RN. Renamed (J3648) Harland & Wolff 12 May 1941 Taken over by RN. Renamed (J4002) Smiths Dock 16 January 1941 Taken over by RN. Renamed (J4009) Smiths Dock 18 November 1940 Taken over by RN. Renamed (J4020) Smiths Dock 10 December 1940 Taken over by RN. Renamed (J4026) Smiths Dock 18 February 1941 Taken over by RN. Renamed (J4030) Smiths Dock 7 March 1941 Taken over by RN. Renamed (J4034) Smiths Dock 30 March 1941 Taken over by RN. Renamed

+Second order, French yards Ship Builder Completed Fate Arquebuse Chantiere de St Nazaire-Penhoët 5 April 1944 Seized by Germany Completed as Hallebarde Chantiere de St Nazaire-Penhoët September 1943 Seized by Germany Completed as Sabre Chantiere de St Nazaire-Penhoët 16 November 1943 Seized by Germany Completed as Poignard Chantiere de St Nazaire-Penhoët Seized by Germany as Tromblon Ateliers et Chantiers de France, Dunkerque Cancelled 1940 and broken up on stocks. Javeline Ateliers et Chantiers de France, Dunkerque Cancelled 1940 and broken up on stocks.

Free French Navy (Forces navales françaises libres (FNFL)) + Flower-class corvettes transferred to the Free French Navy Ship Builder Completed Renamed Fate Aconite K58 Ailsa Shipbuilding Co. Ltd., Troon 23 July 1941 Returned to RN, 30 April 1947. Alyssum K100 George Brown & Co., Greenock 17 June 1941 Sunk by , 10 February 1942 K93 Charles Hill & Sons Ltd., Bristol 23 May 1942 Returned to RN, 31 May 1947. Coriander K183 Hall, Russell & Co., Aberdeen 16 September 1941 Returned to RN, 1947. Chrysanthemum K195 Harland & Wolff Ltd., Belfast 15 January 1942 Returned to the RN, May 1947. Lobelia K05 Alexander Hall and Sons, Aberdeen 16 July 1941 Returned to the RN, April 1947. Mimosa K11 Charles Hill & Sons Ltd., Bristol 11 May 1941 Sunk by , 9 June 1942 Ranunculus K117 W. Simons & Co., Renfrew 28 July 1941 Returned to the RN, 1947. Sundew K57 J. Lewis & Sons Ltd., Aberdeen 19 September 1941 Returned to RN, 1947.

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