A rail wagon (100, 400, 500, 700) is disclosed for the deployment of a panel of track or sleeper set from the wagon to an adjacent substantially parallel track bed in a single laying operation. Each wagon comprises a crane hoist (102, 403, 504) moveable from a transit position to an operational position and at least one stabilizing member in the form of an outrigger having an arm (108) and foot portion (109) to prevent tipping of the rail wagon during track or sleeper deployment. Methods of deployment of panels of pre-formed track and sleeper sets are also disclosed.