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G How Speed is Obtained at the Great Delaware River Plant —Railroad Operations Important—Timber Derricks Used S NEARLY everyone knows, the A Hog Island shipyard is not a shipbuilding plant in the old con- ventional sense of the term. Instead it is an enormous ship-assembling plant in which the products of hun- dreds of separate shops are brought together and worked into finished ocean-going vessels. Hog Island, therefore, represents a distinct de- parture in shipyard design and oper- ation. A map of the yard, Fig. 2, looks much more like a drawing of a railroad terminal than of a shipbuild- ing plant. Asa matter of fact, the suc- cess of the entire Hog Island pro- gram rests on the speed and precis- ion with which materials are handled, classified and delivered to the partic- ular shipways where they are needed. Essentially, the problem of the Hog Island yard is a problem in handling materials. As time goes on, this same statement can be applied with greater and greater force to all of the shipyards of the country. The speeding-up process so urgently rec- ommended by _ Director General Schwab means that materials. of all sorts must flow through the yards much more rapidly than ever before. The opportunity to study the meth- MAIN CLASSIFICATION YARO INTERCHANGE YARD /NBOUND gs BOUND ___ SS /TACHINE 2S S 4B/INET SHOP. ods worked out by eminent engineers for handling materials at the Hog Island yard, should not be overlooked. To Get More Speed T IS only natural that in the construction of the greatest ship-- yard im the world at Hog Island near Philadelphia, a great many problems of general interest to shipbuilders should have been en- countered and solved. To touch on all of these problems in a gen-— eral article such as that published in the June issue of THE Ma- RINE ReEvIEw is obviously im- possible. Therefore, a number of supplementary articles, of which this is the first, dealing with the Specific ship construction problems encountered at Hog Island, will be published in future issues. It is hoped that shippbuilders generally will be able to apply the experience gained at Hog Island to their own problems with the result that the great task of building ships and yet more ships to defeat the Hun, will be everywhere speeded up. INTERCHANGE YARD OUTBOUND fi — = LODGING HOUSE. Lo” RESTAURANT /000- \ PLATFORIT ' POST OFFICE LIESS MALLS haan FIRE STATION WNIT No.1 ‘ proper shipways. By H. Cole Estep As the accompanying map __ indi- cates, the yard is laid out along the north bank of the Delaware river with its main axis: running in a gen- eral easterly and westerly direction. The fifty shipways are arranged in five groups of ten each along the northeastern edge of the property. Each group of ways is 1013 feet in length and since there is a space of 142 feet between the groups, the total length of the shipways is 5775 feet or practically 1.1 miles. South of the shipways are the five fitting-out - docks which extend along the water- front for about three quarters of a mile. The railroad yards lie imme- diately behind the shipways and fit- ting out docks as shown clearly in Pigs 2 The material enters at the southern end, passing finally to the holding yard at the north end of the prop- erty from which it is delivered to the Materials for the fitting-out docks go directly from the classification yard at the south end of the property to the proper dock. Until the material actually reaches the shipways or’ fitting-out docks the operation of the Hog Island yard re- solves itself into a railroad switching ENGINEERS’ AND FOREMENS QUARTERS WoRKMENS QUARTERS BLACHSM/TH = io No.1 SHOP STABLES TTUMTTT AT Mae LLL CTE ior es STATION re hy \ HOSPITAL , . (JAIN SUB= "S STATION- SE Lael —- LL PLATE&® ANGLE SHOP ae DELAWARE RIVER <=. eet) rola “Salah | | GROUP 4 ROUP S| WAAL aL e | = a Pe 74.220" Serials CHANNEL = 35‘ FIG. 2—-MAP OF THE HOG ISLAND YARD SHOWING ARRANGEMENT OF THE SHIPWAYS, FITTING-OUT DOCKS AND : FREIGHT HANDLING AND STORAGE YARDS 277