Abstract: Lifting apparatus for mounting on a support structure comprising first and second elongated guide assemblies each having an anchor end pivotally anchorable to said support structure for vertical pivotal movement and a movable end disposed to extend outwardly beyond the end of said support structure. The first guide assembly is disposed above the second guide assembly and has its anchor end disposed for anchoring to said support structure at a location spaced substantially inwardly from the end of said support structure, while the second guide assembly has its anchor end disposed for anchoring closer to the end of said support structure. A rigid base assembly is vertically pivotally connected to the movable ends of said guide assemblies to form a liftable assembly. Bulkhead means including object engagement means are mounted on said base assembly. Elevating means, mountable on said support structure, are provided for raising said liftable assembly.