EnginesRolls-Royce Merlin 45Rolls-Royce Merlin 45Rolls-Royce Merlin 45LayoutVCoolingLiquidFuelPetrolDisplacement27.022 LRatingsRegimePowerAltitudeRpmTakeoff1,185 hp0 m3,000Combat1,515 hp3,505 m3,000Aircraft 5193119321933193419351936193719381939194019411942194319441945Spitfire Mk VA94≈ Jun 1941 – Jun 1942Spitfire Mk VB3,911≈ Jun 1941 – 26 Jun 1944≈ 7 Mar 1942 – Jul 1943≈ Aug 1942 – May 1943≈ 19 Aug 1942 – Sep 1942≈ 8 Nov 1942 – May 1943≈ Apr 1943 – Dec 1943Spitfire Mk VC2,467≈ Sep 1942 – Jul 1943≈ Aug 1942 – May 1943≈ Feb 1943 – Apr 1944≈ 26 Dec 1943 – Jun 1944≈ Feb 1943 – Apr 1944Seafire Mk IBSpitfire PR Mk IV229