The Jenghiz class destroyers were a type of Federation starship on active duty in Starfleet during at least the late 23rd and early 24th centuries. Refit and construction of these ships was authorized in October, 2269, with refits and new-build ships (NCC-556 through -592) being commissioned throughout the 2270s. (Jackill's Starfleet Reference Manual: Ships of the Fleet, vol. 1, 2006 revision) Many ships of this class were Saladin-class upgraded to linear warp drive and outfitted with newer weapons and defense systems.