OCR Text |
Show TO SEND BACK SHIP'S SOUNDS. M Experiments with New 8afety Device I for Foggy Weather. . H Tho United Statos government is ox- H pcrlmcntlng in San Francisco bay H with a safety dovlco for foggy weather H which Is remarkablo in tho unlquonosa H of Its Idea. It la nothing less than a H fog buoy which will mnko no nolso ot H Its own, but which will bo oxpectcd to H catch tho sound waves of a vessel's H whistle and echo thorn back across tho water. H Tho buoy, or structuro, is construct- od of corrugated Iron sheeting, placed H on piles, nnd built In threo wings H placed at different angles. Each wing H 1b 32 feet squaro. H Tho Idea was given birth accidental- H ly. Thoro has always bcon much H trouble In tho upper part ot San Fran- H Cisco bay becauso tho shoro lights fl cannot be seen when tho weather Is fl bad. Pilots nnd skippers began to no- H tlco, however, how clearly tho corru- fl gated steel warehouses around Benlcla returned tho sound of their whistles, H and for somo tlmo havo been guiding H their way along by tho echoes. Tho H government is confident that tho now H buoys will net in tho samo manner. H |