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ROME Set aa a B Bas conalacad: the ages men have used water transportation. One of the earliest known means of conveyance ~was the Coracle of ancient Britain. Then came the Viking ship and the Trireme of ancient Rome. The Felucca, Spanish Galleon and Chinese Junk were the forebears of the full-rigged and clipper ships, the highest types of vessels pro- pelled by wind and sail. A new era in transportation began with the advent of steam and has progressed until it is now necessary to use every reasonable device known to science to obtain maximum efficiency and economy in the vessel of today. A me \ \N sii Sok A To this end no apparatus developed in recent years adds more than the Sperry Gyro-Compass and Gyro-Pilot. SPERRY GYROSCOPE CoO., INC. Brooklyn, New York CLEVELAND LOS ANGELES SAN FRANCISCO SEATTLE PHILADELPHIA NEW ORLEANS MARINE REvIEw—September, 1931 57