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* Assured of current protection 1000 S. H. P. Diesel tug John F. Cushing is equipped with 60-cell Exide- Ironclad. The owners, Great Lakes Dredge & Dock Co., of which Mr. John F. Cushing is President and Mr. A. Neveling is Vice Pres. and Chief Mechanical En- gineer, designed and engineered the tug. The Mani- towoc Shipbuilding Corp., Manitowoc, Wis., built her. Exide IRONCLAD MARINE BATTERIES Tee ELECTRIC STORAGE BATTERY COMPANY, * Partial view of typical Exide-Ironclad Marine Battery installation. When floated on the bus, the electrical system is automatically protected against interruptions at all times. Investigate. GO-CELL EXIDE-IRONCLAD gboard the JOHN F. CUSHING safeguards electric current 24 hours a day HE 1000 S.H.P. Diesel tug John F. Cushing need not worry about her electric current supply. During normal shutdown periods or in an emergency a 60-cell Exide-Ironclad Marine Battery is ready ata moment’s notice to furnish current for the fol- lowing electrical auxiliaries: : 1. Emergency Air Compressor 2. Bilge Pump 3. Metal Mike 4. All Lights, Searchlights included 5. Oil Transfer Apparatus 6. Oil Purifier 7. Wireless Transmitter and Receiver 8. Electric Steering Gear 9. Lubricating Oil Pumps Not just on the John F. Cushing, but on every type of vessel...from dredge to ocean liner... you'll find Exides handling many jobs with de- pendability and economy. For in- creased safety, economy and conven- ience of operation up-to-date owners and skippers are installing the Exide Marine Floating Battery System. This assures absolute, automatic current protection at all times. Learn more about Exides and the Floating Battery System. Write for bulletin, ‘‘Exide Batteries for Com- mercial Vessels.’”’ Or, have an Exide representative call. There’s one handy to every coast and inland port. He’ll be glad to talk over your prob- lems with you. No obligation. Philadelphia THE WORLD’S LARGEST MANUFACTURERS OF STORAGE BATTERIES FOR EVERY PURPOSE 32 Exide Batteries of Canada, Limited, Toronto MARINE REVIEwW—November, 1931