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188 THE MARINE REVIEW February, 1919 THE COLVEN MARINE BOILER THE COLVEN THE COLVEN a stands for ot ‘ . N gives SAF ET Y \ EFFICIENCY THE COLVEN THE COLVEN means is . RELIABILITY SIMPLICITY THE COLVEN MARINE BOILER is a highly specialized product, built only for marine work. No handholes and fitted joints to be kept tight. No flat surfaces to be stayed. The highest economy and steaming capacities within the smallest space and weight. IF YOU HAVE A RUSH JOB WE CAN HELP YOU. CONSULT US. Send for Booklets. NEW YORK ENGINEERING COMPANY 2 RECTOR STREET NEW YORK Manitowoc Shipbuilding Co. Designers and Builders of Steel Passenger Boats ‘Floating Cranes Marine Engines Steel Freighters Lighters Semi-Diesel Engines Sand Suckers Fireboats Marine Boilers Dredges Tugs Deck Machinery, etc. Dump Scows Facilities for prompt and economical repairs MANITOWOC - - ~ WISCONSIN MODERN MARINE BOILERS and STEEL SHIP BUILDING TUGS, PASSENGER STEAMERS and SPECIAL CONSTRUCTION WRITE JOHNSTON BROTHERS FERRYSBURG, MICHIGAN