Abstract: A crane comprising: an elongated support structure arranged to extend generally horizontally during crane operation; a crane chassis; at least one mounting assembly mounting the chassis at least substantially on the top of the support structure for movement therealong during crane operation; and, a hoist carried by the crane chassis, the hoist extending at least substantially entirely laterally of the chassis so as to be cantilevered from the support structure. The support structure has a plate having a pair of shoulders on which the mounting assembly bears and moves along during movement of the chassis along the structure.