 Steam Incorporated has operated or participated in excursions to almost all parts of the national railway network that has been open since the late 1970s.As one of the first organisations to operate a private carriage fleet, excursions have been run since 1978.During the early years of the society's existence, NZR would not permit heritage operators to use their own locomotives on the national network, thus limiting the society's locomotive activities to the area of The Engine Shed.