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Isherwood Combination System Sectional View of Interior of Passenger Liner designed on the Isher- wood Combination System (In a vessel of this type, deep transverses are recom- mended for hold construction, but are not essential.) Adaptable to any type but particularly advantageous for passenger liners. Shipowners are advised to specify that plans and structural arrangements should be approved by SIR JOSEPH W. ISHERWOOD & CO., Ltd. 17 BATTERY PLACE, NEW YORK and 4, LLOYD’S AVENUE, LONDON, E. C. 3 CARNEGIE SHIP BUILDING PRODUCTS A complete line of structural steel sections for shipbuilding purposes, including Carnegie Beams with their wide, parallel flanges, shipbuilding channels and bulb angles, Carnegie Floor Plate in a raised pattern insur- ing long wear and easy cleaning, and rolled steel plates of every description. The name ‘‘Carnegie’’ has been identified with steel manufacture for nearly three-quarters of a century— a good name to look for on Steel. CARNEGIE STEEL COMPANY Subsidiary of United States Steel Corporation PITTSBURGH, PA. MARINE REviEw—May, 1931 USE DIESEL-ELECTRIC POWER For AUXILIARIES anp DECK MACHINERY N either steamship or motorship, this practice simplifies the power problem and ought to have first consideration. All motor-driven equipment served from a Diesel-electric generator is ready for instant start at any time, regardless of load on or idleness of main engines, without standby loss, and cold weather does not affect the deck machinery. There is no time waste in warming up, and the danger of cracked cylinders from freezing of en- trained condensation is avoided. Power cables serving motors and installed in out of the way places are better than steam pipes, which must be accessible for inspection and repair, must be heavily insulated against cold, and invite leakage losses. Diesel power units can be located for operating convenience rather than for proximity to the main power supply, and their extreme fuel economy effects very substantial net cash savings. Diesel-electric current is generated so cheaply that some vessels use it even for cooking and heating. The new compact low-head-room high-speed McIntosh & Seymour Engines are ideal for driving marine generators and obtainable in capacities for every auxiliary and deck machinery need. These units go into cramped side space easily, operate smoothly and quietly, have a fuel rate almost as favorable as the most economical main Diesel engine, and nothing more dependable can be put into the machinery room. Let our Engineers submit performance and cost data on new construction or remodeling. McIntosh & Seymour Corporation Division of American Locomotive Company Main Office and Works: Auburn, N.Y. New York City Houston, Texas 30 Church St. 2408 Esperon Bldg. Kansas City, Mo. 1016 Baltimore Ave. Jacksonville, Fla. 412 Bisbee Bldg. San Francisco 514 Matson Bldg. Mf‘ INTOSH & SEYMOUR 73