Abstract: Gangway structure providing a connecting link between a vessel and a docking area to permit loading and unloading of the vessel when adjacent to the docking area under the prevalent variable relative positional dispositions of the vessel and docking area due to tidal and water current changes, vessel displacement changes caused by such loading and unloading, and the like, including a gangway structure having means to support one end thereof on the vessel, means to support the other end thereof on the docking area, and means such as cooperating vertical pivot and horizontal axis roller means to preclude the torsional twisting of the gangway structure, e.g., in any position of movement thereof in connecting link relation to the vessel and docking area, and preferably associated tower structures and elevated connecting gangway span supporting means extending between such tower structures for accommodating the docking area supported end of the gangway structure and such means to preclude such torsional twisting.