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70 Dry Docking Ship Repairing Fuel Oil Installations Diesel Installations Turbine Balancing all Carpenter and Joiner Work —E~—__==—=== Tank Construction Special Machinery Installations ESTABLISHED, 1854 SHERIFFS MANUFACTURING CO. > PROPELLER —AWHEELS and PROPELLER b LAD ES to fit any hub. MILWAUKEE, WIS. STROMBOS SUPERPOWERFUL MARINE SIGNALS Operate on 10 to 100 Ibs. air pressure. Made of Brass and Bronze in 15 Models and tones. PENETRATE AND DOMINATE ALL NOISES. Heard from SIX to EIGHT MILES. Require 1/10 the air used in all other signals, pro- ducing greater volume of tone. Nothing inside to get out of order—No moving parts, repairs or attention required. BEWARE OF INFERIOR STROMBOS SIGNALS ON THE MARKET. AMERICAN STROMBOS COMPANY, INC. 18th AND MARKET STS. PHILADELPHIA, PA. THE RITCHIE LIQUID COMPASS The Standard Liquid Compass the world over. Used Exclusively in U. S. Navy for over 40 years. Over 65,000 on Merchant Vessels in all parts of the world. Made in all sizes 2 to 12" dia. Magnets for adjusting Purposes. Standard Binnacle E. S. RITCHIE & SONS Brookline, Mass., U.S. A. Agents for the Great Lakes, The Upson-Walton Company, Cleveland, Ohio Valuable territory open to Dealers W.H. MORETON CORP., MARINE EQUIPMENT & SUP 780 Commonwea!th Ave. 116 Walnut St., cee Boston, Mass. Phila., Pa. W. & J. TIEBOUT 118 Chambers St., New York City MARINE REVIEW—December, 1927