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6 MARINE REVIEW. Quadruple Expansion Engines of Northern Steamships. As the work progresses on the machinery and hulls of the twin screw steel passenger steamers building by the Globe Iron Works Company for the Northern Steamship Company some very interesting details are brought out. Through the courtesy of builders and owners the ReviEw has been enabled to present illustrations and give details of the construction, and with this issue is presented detailed drawings, one showing a longitudinal view of one of the engines, and the other showing the two en- gines in a mid-ship section. The first of these boats will be launched within a month or six weeks. 'The cost of the two will be more than any five of the finest passenger steamers on the lakes. Over 7,000 horse power will be developed by the two over- head cylinder quadruple engines in each steamer, and this will give them a speed of over 20 miles an hour. Steam will be fur- nished at 195 pounds pressure by 28 Belleville boilers, fully des- cribed and illustrated in the REvimw of May 11. 'The mean speed of the engines will be 120 revolutions per minute. The pro- peller wheels will be sectional four-bladed, 13 feet in diameter and 19 feet pitch. The shafting will not extend outboard and will be platedin somewhat similar to the Campania. The high pressure cylinder is forward, followed by first and Second intermediate and the low pressure, the sizes being 25, 36, 51% and 74 inches by 42 inches stroke. An idea of the mas- siveness of these engines may be had from the fact that the low pressure cylinder on one of the engines weighs 26,000 pounds. The cylinders will face outboard, being supported at the back by four forked cast columns with slipper guides, the front being supported by-eight wrought iron turned columns. 'The bed-plate is of the well-known Globe pattern, very massive, in four sec- tions, and weighs about 70,000 pounds, having eight large bear- ings for the crank-shaft. This will consist of four interchange- able parts fixed at an angle of 45 degrees. The bearings are 1334 inches diameter by 14 inches long and are lined with white metal. The engines will be fitted with piston valves throughout and Joy valve gear. There will be one 12% inch valve on the high pressure, two 12% inch on the middle pressure, two 14% inch on the second middle pressure and two 25 inch on the low pres- sure. The thrust block will be attached direct to the engine bed as well as its own chair in the hull. It is of the horse shoe pat- tern, having ten large collars lined with white metal. 'The hous- ing for the thrust block carries also a pillow block for the thrust shaft. There are three intermediate lengths of shafting 13% in- ches diameter, two 20 feet long and one 25 feet long, and the propeller shafts are 22 feet long. The air pumps and condensers are independent and of the vertical cross compound type with steam pistons 15 and 30 inches diameter by 18 inches stroke. The water service will be per- formed by one 8 by 14 by 12 inch ballast pump, six Blake boiler feeders 14 by 9 by 10 inches, two in each stoke-hold, one 8 by 6 by 10 duplex fire pump, one 8 by 6 by ro duplex bilge pump, one duplex 4 by 6 by ro cooler pump for engine service, one 4 by 6 by 10 steward's pump and one sanitary pump. It is expected that a force of 60 men will be required to look after the engine department of the boat, and between 800 and 1,000 tons _ of coal will be burned on a trip from Buffalo to Duluth. A letter from Jas. J. Hill, president of the Great Northern Railway, the Northern Steamship Company being virtually owned by the railroad company, confirms the statement that Messrs. Samuels & Co., merchants in the Japan and China trade, pro- pose to run some of their steamers to aconnection with the Great Northern at Seattle. Thus, when these handsome steamers are put in commission next spring, a traveler can step aboard and take through passage for Yokohama or Hong Kong, or Cleveland merchants can have their teas consigned direct. 'This is merely by way of illustrating the fact that these steamers, and four larger ones that will be built as soon as these are clear of the yards, are part of a transportation system that will encircle the globe. No expense is being spared in finishing and furnishing these steamers to make them the equal in point of comfort and elegance to the transatlantic liners. "Those who are in position to know say that they will be furnished more handsomely than the famous Long island sound steamers. Mr. T. P. Carpenter, general pas- senger agent of the company, gives the following information concerning this feature of the boats: Entrance is made through a gangway well aft, to a vestibule or social hall, where are to be found the offices of the purser and steward. Aft ofthe vestibule is a gentlemen's cafe. 'The main staircase leads from the forward part of the vestibule to the main saloon. 'This has a double row of staterooms on each side, divided by small entries or halls, Over the main saloon aft of the boiler space is a galleried saloon, surrounded by a single tier of state-rooms of extra size, with windows opening on the promenade deck. 'The forward part of this saloon widens into a Spacious ladies' music room and library 26 by 29 feet. Out of this room are doors that lead to the prom- enade deck, and there is also a stairway to the main saloon below. An open grate fire at the after end of this saloon will be a novel and beautiful feature. [he ladies' and gentlemen's bath rooms and lavatories are on opposite sides of the main saloon deck near amidships. 'Two large parlor rooms, with alcove, containing private baths, are located at forward end of after saloon. A num- ber of parlor bed rooms are located in forward saloon and on the promenade deck above. The boiler space will be enclosed with a double partition lined with asbestos, insuring comfort to the occupants of rooms in that vicinity. The forward part of the main saloon has a stairway leading toa forward deck saloon. This deck saloon has a light and air well over the main saloon, and is surrounded by a number of extra large state-rooms; a bath room and lavatory, and a day smoking-room 12 feet by 26 feet, made unusually attractive by the unobstructed view to be ob- tained from its windows. From the extreme end of the forward saloon a stairway leads to a restaurant on the main deck. 'The interior finish of the various saloons will be Cuban mahogany. The 175 state-rooms are designed to comfortably accommodate 350 cabin passengers. 'They will be fitted with every modern improvement, including running water, electric lights, call bells, etc. The steerage is located on a lower deck forward. In view of Cramps still clinging to Scotch boilers for the new American liners and the Fairfield company putting them into the Campania, it was thought that an inland ship building company was over reaching conservative practice in putting Belleville boilers in two 7,000 horse power steamers. But it would seem that the British admiralty by placing an order with the French firm of Delaunay, Belleville et Cie for a battery of Belleville boilers to be placed in the 4,000 horse power torpedo destroyer Sharpshooter, had unwittingly commended the advance made by the Globe company. 'This order is the first of its kind placed outside of England, and when the claims made for the Thorneycroft and Yarrow water tube boilers are considered it is quite a compliment to the Belleville boiler. Last week the REviEw stated that bilges of a number of wooden vessels in the Lake Superior trade had been damaged while tying to the Sault canal dock. Ina letter to President Wilson of the Lake Carriers' Association Gen. Poe says: "I think it quite possible that the injury may have been caused in the manner stated. You are aware that we are deepening the canal to 24.8 feet of water, an increase of about 8 feet 8 inches. The excavation is entirely through rock, and can only be done by drilling and blasting. 'This necessarily leaves rough sides for the time being, but it is intended that they shall eventually be smoothed down. 'The projections from the sides can not be very great, and I will suggest that vessels should be careful to leave a space, say of three feet, between them and the piers of the canal above the locks, until the work of dressing off the sides has been accomplished. Meanwhile we will do all in out power to reduce the danger."'