Merlin 45 (RM 5S) at 3,000 rpm at ; used in Spitfire Mk.V, PR.Mk.IV and PR.Mk.VII, Seafire Ib and IIc. Maximum boost pressure of +16 psi. First production Merlin 45, 13 January 1941.
merlin 45 (rm 5S) at 3,000 rpM AT ; used IN SpitfirE mK.V, pr.mK.iv And Pr.mK.vIi, seafIre Ib and iIc. maXimum BoosT preSsuRe OF +16 Psi. fIRst proDUctIon mErlin 45, 13 jaNuary 1941.