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WOODEN TIMBERS SHORE UP THE NOTE HEAVY International Shipbuilding Corp. say that the only anxieties with respect to delays which they feel at present, are occasioned by difficultes in ob- taining shipments of steel at a rate -adequate to the capacity of the forces at the yards; owing to the improved schedules at which steel mills are operating, however, they look for an early enlargement in the supply of steel. Staggering the Imagination An idea of the immensity of the plant at Hog Island may best be conveyed by figures. The combined water requirements af the yard call for a capacity that would supply a city the size of Minneapolis. The sewer system would answer the needs of a city. of: -30,000 people. operating the machinery throughout the plant, motors are required having a connected load of more than 28,000 horsepower, which is equal to the maximum demand for power in the city of Providence. The air com- pressor equipment at Hog Island is exceeded in size by only one other installation in the world, that of the Rand mines in South Africa. Some 75 miles of standard gage railroad track have been laid in the yard; the rolling equipment on these tracks com- prises 20 locomotives, 500 freight cars and 50 passenger coaches. The coaches are used exclusively for transporting the workers between Hog Island and Philadelphia. In addition to the rail- toad trackage, 15 miles of substantial roadway have been built for hauling with motor trucks.. Approximately SHIP STEEL CONSTRUCTION For . THE MARINE REVIEW WHILE IT IS BEING BUILT-- 25 acres of the shipyard site are being placed under roof. Hog Island was designed primarily as a ship assembling rather than a shipbuilding yard. That is, all the various ship parts and materials are manufactured elsewhere, in some 3500 plants throughout the country, and shipped in such completed form that they may be put right into place in the hulls without further finishing. Therefore, the shop buildings at the yard are devoted entirely to the main- June, 191g tenance of working tools and equip- ment, to the manufacture of tem- plates, and to such corrective work as occasionally is required on fabri- cated plates and shapes and Other parts. Of such magnitude is even this work at the Hog Island yard, however, that some of these shop buildings are nearly 700 feet long. Over a Mile of Shipways The 50 shipways extend more than a mile along the river front. For efficient management, they are dj- vided into 10 groups of' five ways each, all under a central supervision, Each group is provided with a ways administration building, a service building, a tool house and a com- pressor house. Between each two ways are two steel derricks, each provided with four cantilever arms. Thus each way is served by eight arms which command all parts of the way. Forty of the 50 ways are of wood pile and timber deck construc- tion; the remaining 10 are entirely of concrete. The method of sinking the concrete piles is to drive sheet steel sheaths which are filled with the concrete. Work on the wet basins or fitting out piers, where the 'ships will be provided with turbines, boil- ers, pumps, lighting sets, steering gears, engines, windlasses, joinery work, winches, refrigerators, deck houses, piping, etc., now is under way. In order to provide the "necessary depth of water,: it is necessary to remove 3,500,000 cubic yards of mud; the latter is being pumped into im- pounding basins on marsh land which RIVETS THAT DO NOT PASS INSPECTION ARE CUT OUT WITH AN OXYGEN TORCH AND REPLACED