250 HOG ISLAND, THE GREATEST SHIPYARD IN THE WORLD. 



"A" boat has been erected, consisting of three Babcock & Willcox boilers, a 2,500 

 horse-power General Electric (Curtis) geared turbine, with its heater, pumps, con- 

 densers and other auxiliaries. This installation was made for the purpose of in- 

 structing the installation crews, students and others, and to make sure that all the 

 calculations and measurements of the engineers and draughtsmen had been prop- 

 erly made. In like manner the other ship foundation template building contains a 

 "B" installation, consisting of six Babcock & Willcox boilers, a 6,000 horse-power 

 General Electric (Curtis) turbine, and the auxiliaries. This entire group of build- 

 ings is also heated from a local, central heating plant. 



Outside the yard are the living quarters. Here there are barracks for 6,000 

 men. Each building is a two-story structure and houses 100 men in eight separate 

 wards. These compare most favorably with the army barracks. There is a sec- 

 ond guard barracks here which accommodates 200 guards. (A third one is located 

 in the extreme eastern end of the yard.) 



The hotel, used principally by the officials, heads of departments, chief assis- 

 tants and guests, is modern in every respect, and good meals are served here at 

 cost. One of the four fire stations is located here. The department contains 100 

 men and 16 motor-driven pieces of apparatus. The other three fire stations are 

 located at strategic points within the yard. 



There are two large temporary mess halls near the barracks, but these have 

 been practically discontinued as now the workmen are fed in the service buildings 

 near the ways. During the construction period some 13,000 meals were served 

 daily in these mess halls at 30 cents each. In all, there are at present fourteen 

 eating places on the island, beside the large cafeteria and hotel. 



A Young Men's Christian Association building completes the living section of 

 the plant. Its auditorium seats 2,000. It also contains a large gymnasium, twelve 

 billiard tables, locker rooms, shower baths, besides numerous class-rooms on the 

 second floor. These buildings are all heated from a local central plant. 



As Hog Island is outside of the limits of the city of Philadelphia, it was nec- 

 essary to establish its own local utilities. A domestic water plant, taking water 

 from the Delaware River, together with a filtration and treatment plant, was in- 

 stalled. To distribute this drinking water through the island requires 120,000 feet 

 of piping. A high-pressure piping system for sanitary and fire purposes also covers 

 the island. This requires 90,000 feet of pipe, and raw water is furnished from 

 three motor-driven pumping plants. The ordinary operating pressure is 80 pounds, 

 but on the outbreak of a fire it is run up to 200 pounds. There are 260 fire hydrants 

 systematically located. A complete sewerage system has been put in with two Im- 

 hoff tanks and necessary sludge beds. Sewer lines are 73,000 feet in length, and 

 the capacity of the system is ample for a population of 35,000. Electric power is 

 used throughout the yard. The current, purchased from the local company, comes 

 in over a steel tower transmission line at 66,000 volts and goes to a sub-station 

 near the center of the yard. The capacity of this sub-station is 30,000 KVA of 

 which 6,000 is reserve, and the connected load is something over 40,000 horse-power. 



