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392 "THe Marine REVIEW ONE oF THE Pumpinc Sets FoR THE SAN FRANCISCO FirEBOATS, SHOWING Two Mutti-StaGe CENTRIFUGAL Pumps DrivEN By CurRTIS STEAM TURBINE. met the requirements of her designers: "The new fire tug, William A. Mc- Gonagle, owned by the Duluth, Missabe & Northern railway, has been given a thorough test of ability to throw wa- ter, "The big fire fighter, when working at her full capacity, will throw 12,000 gals. of water a minute and a stream 400 ft. long. During the test the ma- chinery and pumps worked perfectly and all who witnessed it, including members of the city fire department, oticials. of. the city, 'several. of . the government engineering department, and a large number of citizens, besides the October, 1909 railway officials most interested, were convinced of the tug's efficiency for which it was built." The pumping equipment for the two fire boats, David Scanwell and Dennis T. Sullivan, now being built for the San Francisco fire department, differs somewhat from that of the Duluth boat, in that each turbine is direct connected through flexible couplings to two multi- stage centrifugal pumps, all three units of each set being mounted on a com- mon bed-plate. Two of these sets are required for each boat. ' Each pump of each set is capable of delivering 2,250 gals. of water per minute against a discharge pressure of 150 lb. per square inch, the two pumps pumps of each unit being so designed that they may be operated either in paral- lel or in series. When operating in paral- lel, they deliver 4,500 gals. per minute at 150 lb. pressure, and when operated in series, 2,250 gals. per minute at 300 lb. pressure. These ratings apply when the suction head is zero. Largest Pier on the Atlantic Coast OSTON now has B pier for commercial purposes on the Atlantic. coast. It is 780 ft. long and 240 ft. wide. It is now in service and is occupied by the Cunard line. The- pier is' one of several to be pro- vided at the East. Boston terminal of the Boston & Albany railroad, and was built by the New York Central & Hud- son River railroad, which leases and operates the B. & A. The New York Central is building another pier east of this, which will be a little larger. It will be finished next January and will be occupied by the Leyland line. The New York Central 1s also build- ing at this terminal a new grain ele- vator with a capacity of 1,000,000 bu.-- the largest in New England. It will have a modern grain dryer attachment. The new grain elevator and grain dryer and power house will cost $1,500,- 000. The new piers will cost over $700,000 apiece, and the expense of re- building and rearranging this great ter- minal at East Boston stands the New York Central road about $4,000,000. the largest Some Comparisons. The dimensions of the new pier, 780 ft. by 240 ft, do not convey its full size to one unaccustomed to figures. It: is 29 ft. longer than the capitol at Washington. Mauretania, the largest steamship afloat, could easily dock at this pier on one side and Lusitania could easily dock on the other side of the pier at the same time. When the new pier for the Leyland line is built, four ships of the size of the Mauretania could dock at the same time, could all unload their freight and passengers at the same time, could all unload grain at the same time, could: all take coal or freight from lighters at the same time, and, if bigger ships are to be built they can come in too, for at these berths there will be 35 to 40 ft. of water at low tide. On B. & A. pier No. 3 alone 43,880 soldiers could stand on squares of 2 ft. and on the two piers, Nos. 3 and 4, the entire army of the United States could be assembled. Five hundred and twenty-eight freight cars could be placed on the pier. The new grain ele- vator will be 186 ft. 6 in. from the base to the ridge pole. The elevator will be 269 ft. and 8 in. long and 73 ft. wide. The largest piers in New York are - on the North river, between West Four- teenth and West Eighteenth _ streets. There are three of them, each 825 ft. long and 125 ft. wide, and each has am. area. of. 103,125: o4 ff Bo & A. pier No. 3 (Cunard line) has an area of, 175,52): sq. fi. and. & A. pier No. 4 (Leyland line) will have an area of 187,200 sa. ff Like so many other great enterprises, the rebuilding of the East Boston ter- minal was brought about by fire. On "duly 6, -1908,a- fire started: atthe ter- minal in the afternoon, and, in an hour, all but one of the piers and the grain elevator were in ruins. Size of the Slips. A most important part of the new terminal is the new slips. The govern- ment of the United States is spending $8,000,000 in dredging the harbor so that the largest ships can get in at all times. The slips between the new B. & A. piers are each 250 ft. wide and have a depth of 35 to 40 ft. at low water. B. & A. pier No. 5 will be built and will be equipped for handling quickly the heaviest sort of cargo freight, such as ore and heavy bulk freight. Present Condition of the Work. B. & A. pier No. 3 (Cunard line) is now in service; B. & A. pier No. 4 (Leyland line) will be ready next Jan- Hay, 5 @ Aw pier No. 5 will he built as stated above. The new grain elevator will be ready in the autumn of 1910. Already the old freight sheds on Marginal street have been torn down, later the old locomotive round house and turn table will also come down; the office building will be moved across Clyde street to make room for the new power house and all the room thus se- cured will be needed for the new ele- vator and dryer and the service tracks. A round house and a new freight