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November, 1925 MARINE RE VEE W the design of the L. D. Smith. Patented Self-unloader permits converting the standard bulk freighter to perform the following services We specialize in the of bulk freight ships into self- unloaders for special trades. Unload coal, sand, stone, and other dry, free flowing materials from five hundred to one thousand tons per hour* Will unload large open hearth stone for chemical trades or breakwater construction. Permits loading sand and gravel with centrifugal pumps: and unloading dry directly on the dock. Permits loading sand with pumps and unloading with same pumps for hydraulic filling purposes. Let us figure on 2 ah a your hull and conversion f : A a machinery repairs by con- tract or attrac- tive day rates. Sturgeon Bay harbor offers ideal winter berthing. ag. Str. “Lakewood” Sand Str. ‘Fontana’ 6000 Str. “Lake Markham’’ Sucker unloads wet ordry ton converted unloader hydraulic fill boat Leathem D. Smith Dock Co SYSTEM of Ship Construction Sturgeon Bay, Wisconsin : : ISHERWOOD greatly increases longitudinal strength, requires less weight of steel, provides additional dead-weight carrying capacity, reduces : collision damages to a minimum, gives greater facilities for making damage repairs, enables you to build thirteen ships out of the weight of steel ordinarily required for twelve vessels, and each. ship will carry 2 per cent more cargo! ' The Isherwood System has established World records in rapid construction. If you are contemplating the construction ¢ J e W e I SH ERWOOD of a new vessel it will pay you to get fully acquainted with the Isherwood System. 17 BATTERY PLACE, NEW yY _ and 4 Lloyd’s Ave., ts Me We shall gladly send full details. 16—535' Passenger Liners for United States Ship- ping Board. Built by the New York Ship- building Corporation, Bethlehem Shipbuild- ing Corporation, Ltd., Newport News Ship- building and Dry Dock Company. Please mention MARINE REVIEW when writing to Advertisers 31