Abstract: A manifold system for a marine or industrial gas turbine engine, the system being independent of the engine. An annular steam manifold and an annular gaseous fuel manifold are provided transversely surrounding and substantially coaxial with the engine. The manifolds have a plurality of outlets, each connected by a flexible metal hose to its respective one of the engines' fuel nozzles. Each manifold is supported by a pair of stanchions mounted on the engine's foundation assembly and a pair of brackets attached to each stanchion. The brackets provide limited vertical, lateral, axial and tilt adjustments of the manifolds.