Engineering Wonders of the World
Volume I

66 ENGINEERING WONDERS OF THE WORLD. Covered Berths, Gantries, etc. At the shipyard of Messrs. Swan, Hunter, and Wigham Richardson, at Wallsend, sheds of great height and width com- pletely cover several of the berths for their whole length. These sheds are of steel lattice work, and the roofs are covered with glass, thus protecting from the weather the vessel It was under one of the largest of these sheds that the Cunard liner Mauretania was built. At the yard of Palmer’s Shipbuilding and Iron Company, at Jarrow-on-Tyne, another novel arrangement is in operation over three of their largest shipbuilding berths. This con- sists of a number of cableways extending the Fig. 1.—THE “ ADRIATIC ” AS SHE LAY IN MESSRS. HARLAND AND WOLFF’S YARD BEFORE LAUNCHING. Observe the great gantry cranes spanning the building slips, and the fore cradle supporting the vessel’s bows. under construction and the workmen engaged on her. Under the roofs of these sheds are fitted numerous electric “ underhung ” re- volving cranes, arranged so as to work in any position in the whole length of the building berth. From the standards and stiffening girders forming the sides of the sheds, the ships under construction are shored for fairing, etc. full length of the berths, and supported at each end by specially designed cross girders mounted on inclined supports. On each cable- way there is a trolley carriage, from which, the hoisting, lowering, and longitudinal and cross- traversing motions are controlled. At Belfast, Messrs. Harland and Wolff’s structures over the berths take the form of