Another aircraft broadly similar to the Mk V Spitfire, but with Merlin 55 engine driving a four bladed propeller and folding wings. The wing folded upwards just inboard of the cannon and the tips folded down giving a “Z” configuration. When fitted with the Merlin 55M engine the designation became L Mk III, this mark being distinguished by the six individual exhaust stacks on each side of the nose rather than the groups of three collector pipes. The Mk III was the most numerous Seafire with 1,220 produced.