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ee eT ee Pe ee re Ee flashes the message PUERTO RICO BOUND. Luxz- rious steamer Coamo of the Porto Rico Line makes certain of radio uae operation at all times. She carries a dependable 60-cell Exide Marine Battery. Built by the Newport News Shipbuilding & Drydock Company. Her designer—Theodore E. Ferris. T THE San Juan office of the Porto Rico Line, time of arrival is noted and checked with schedule. Hours before she docks, radio tells of the on-time arrival of the Coamo. Radio, the nerve-center of a ship, must not fail. It must forever be on watch, keeping in touch with her port, checking positions, receiving news, re- laying messages, getting storm warnings. Power for its operation must be safe- guarded. Aboard the Coamo radio is safeguarded, with a dependable 60-cell Exide Marine Battery. It is on the job every second of the day and night to operate the Pr ELECTRIC STORAGE BATTERY COMPANY, Exide MARINE BATTERIES from the SS COAMO= emergency radio apparatus. Think of the impor- tance of such a battery, should regular radio power fail. Dependable Exides aboard mean safety for any ship. Not alone radio safety, but for lights, aux- iliaries, pumps, bulkhead doors .. . there are Exides to take over the emergency operation of these important parts of equipment too. Write for further information on Exides and Exide-Ironclad Batteries and their many varied applications in marine service. You will be interested in our new Bulletin—Form 3420. No obligation. Philadelphia THE WORLD’S LARGEST MANUFACTURERS OF STORAGE BATTERIES FOR EVERY PURPOSE Exide Batteries of Canada, Limited, Toronto MARINE REvIEw—June, 1931 59