Show r ii 0 I 1 I 1 4 I 1 jai I 1 1 1 I 1 1 3 1 repaint REPAIRING rg A SHIFTS BOTTOM atlant I 1 the london civil Z en engineer g ineer and architects journal c contains nt ns the following account of a method adopted by a shipwright in the Brit tish service to repair the bottom of a steamship of wax wat while afloat whose bottom had been injured by b at striking on the rocks near rio janeiro in obedience to fo the directions to report the athenian awa ner in which I 1 proceeded to replace a defective sheet of copper on the bow of her Maje ship hyacinth the same being five feet below the light water line lined I 1 beg to state that on considering si what means could be adopted for so doing short of heaving the vessel oat it if boiar red to me that the of might be applied to it I 1 accordingly caused 1 a watertight water tight case of three sides and a bottom to be made ascertained the curve carve of the bow ow on each side of the defected part and cut the mouth or open side of the case to fit it and having lined or dressed the curved edges with felt saturated with tallow and attached ballast to the rough tree rail and lowered until the top was within a few inches of the surface opposite the defective part over which it was hauled by means of two hawsers hawkers haw sers one placed vertically from the rough tree rail under the keel to the opposite side of the other ho ly from the quarter round to the stern to the op opposite p 0 site side and both set taut with tackles tac klea by these means the case was made to fit close bottom where it was f uther futher secured by ashore a react reaching rea cuing aing from the side of the ship shi IR to its outer ed edge g e to i r vent its ris rising iriv the suction auction hosrof hose of afire a fire e eugine gine was then in the caso case and the water wate r contained contain edin in it pumped out when empty two shipwrights ship wrights descended and removed the defected copper replacing it with a new sheet the operation from the time of suspending the case until completed did not occupy more than ban twenty minu minutes tei this principle could be applied to the repairs of man many def defects acts under water such as win wins cooka of ships p a or the pipes in the bottoms of of steam ate am L vessels |