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January, 1926 a a ‘= ey = & Ss Py = a 4S % ~ x 3 Ss S Port of Portland’s Diesel- electric Dredge ‘‘Clacka- mas.’ RIDE Refrigeration on the World’s Largest Drede The 50 officers and men of the ‘‘Clackamas” have the benefits of cold drinking water, pure ice, and a cold storage room for food, through a Frick Combined Refrigerating Machine. What has your ship? Bulletins on request. Nt I eee PA.. U.S.A. AGCHINERY SUPERIOR SINCE TEE MACHINERY SUPERIOR SINGE 1082 ey Engineering Specialties REFLEX WATER GAGES Used on all types of boilers by all the Principal Navies of the World “THE WATERSHOWS BLACK” ADVANTAGES: Quick and reliable observation of the water level. Safe, sure and durable at high pressures. Not af. fected by cold air drafts. Most effective protection against injuries to boilers and workmen, Easily ap- plied to all types of gage glass fittings. When filled with WATER the Reflex Gage always appears BLACK. When empty it instantly shows WHITE. No mistake pos- sible. This feature alone is worth many times the cost of the Reflex. Send for catalog of {Water Gage Apparatus. MANUFACTURED BY THE JERGUSON GAGE & VALVE CO. WINTER HILL, SOMERVILLE, MASS. MAKINE REVIEW U.S. S. LANGLEY. popu ied s Edwin Levick, N. Y. C. Sturtevant Equipment on U.S.S. Langley! Aboard the airplane carrier—the U. S. S. Langley— may be seen a unique installation of induced draft equipment. Two Sturtevant Induced Draft Fans driven by two Sturtevant Turbo ‘Transmissions represent the latest developments in induced draft equipment for ships. These units were installed to eliminate the necessity of a tall stack on the flying deck and also to discharge the gases away from the ship so that no smoke trouble would exist when working on planes or flying off and on deck. This equip- ment is successfully operating under all conditions. It is ideal in performance. Sturtevant Induced Draft Fans are highly efficient, sturdily constructed and operate economically. Sturtevant Turbo Transmissions are thoroughly dependable in every respect.. They consist of a reduction gear transmission built integral with a turbine. The turbine casing is supported by the transmission base and the turbine rotor is carried on the high-speed shaft of transmission. This construction constitutes a steam turbine driven speed reduction unit especially commendable for its compactness, ease of installation, and rigidity. Let the Sturtevant Marine Department help you with your problem. B. F. STURTEVANT COMPANY Plants Located in Framingham, Mass. Hyde Park, Mass. Berkeley, Cal. Camden, N. J. Sturtevant, Wis. Galt, Ontario Sales engineering offices and direct representatives in all principal cities. UFreVal 1480 Please mention MARINE REVIEW when writing to Advertisers 65