The Le Fier class was a series of sea-going torpedo boats built for the French Navy.

Laid down in 1940, the ships were incomplete as of the fall of France and remained unfinished for the rest of World War II.

With rising tensions with Nazi Germany after their remilitarization of the Rhineland in 7 March 1936, the French Third Republic undertook a series of naval construction programmes to maintain military parity in the face of rapid German re-armament.

The Le Fier class were based on an enlarged La Melpomène-class torpedo boat design with improved sea-going features.

[2] In June 1940, the German army seized all shipyards from the new collaborationist Vichy France government including the Le Fier-class torpedo boats still under construction.

The remaining torpedo boats were transferred to the Kriegsmarine and renamed TA1-TA6 (Torpedoboot Ausland) and were to be completed for the Germans with revised specifications.

Eventually in April 1943, due to a lack of general progress, it was decided that only TA1 and TA4 would be completed and the rest were to be cannibalized to finish the remaining two ships.

[4][5] The Germans assisted Spain in the design and construction of the Audaz-class destroyers using captured plans and documents from the Le Fier class.