ECHO SOUNDING
THE NEW DEVICE. (United Press Association.—By Electric Telegraph.—Copyright.) (Received tin's day at 9.25. a.m.) ■ LONDON, March 11. “Echo sounding,” as an aid to navigation is , making -rapid progress the British “Mercantile” says. Naval .officers of the British Admiralty pioneered the new system by installing surveying vessels, but a difficulty was encountered in cutting the necessary holes in existing ships. Instruments fire now,being built in tbe shell of.new ships. Without perforation fifty British merchantmen have been fitted mside df two years, among the satisfactory results being the Royal Alail Asturias, A striking tribute to the device, comes from the navigating officer .of \tlie’ cruiser Australia. Referring sp&ially to ..•navigation in. the vicinity 5k Halifax and, St. Lawrence lie . said tlrßt.eclx) sounding had proved df the neprost use, adding twentyfive percentj.£o the ship’s safety in thick weathp??ai pilotage waters. ' •4£ ; f v\
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Hokitika Guardian, 12 March 1929, Page 6
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142ECHO SOUNDING Hokitika Guardian, 12 March 1929, Page 6
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