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Balance the Investment between Bridge and Engine Room N the industrial power plant the engi- nnn nnn nieer has jurisdiction over the generation of power, its distribution and use. On board ship this responsibility is necessarily divided. The engineer generates the power and de- livers it to the propeller, where he hands it over to the captain. The economical conversion of this power to miles traversed toward a given destina- tion can be accomplished only by the aid of efficient bridge equipment. A good seaman will make his destination although his compass may be subject to varying errors from many causes. But under such a handicap he is forced to cancel the result of many years progress in marine engineering. The only way to insure a full return from the investment in propulsion ma- chinery is to provide the bridge with the most modern equipment -— the SPERRY GYRO-COMPASS and GYRO-PILOT. The economies provided by this equipment have led to its adoption by 120 of the Bridge equipment is. responsible for World’s leading steamship companies. On the difference between the inefficiency the new ship it insures a full return on the , hed ae a ihe Gia investment in modern engine room ma- of ee ee hone nes chinery. On the ship already in service it of good steering. provides an inexpensive means of raising the over-all economic performance. HU SPERRY GYROSCOPE COMPANY, INC. BROOKLYN NEW YORK CLEVELAND PHILADELPHIA SEATTLE LOS ANGELES SAN FRANCISCO MARINE REVIEW—May, 1929 15