Abstract
THE United States fishermen who use dories (small flat-bottomed boats) to fish on the Grand Banks run a serious risk of drifting out to sea in a fog. This danger can now be very successfully overcome by the use of small radio transmitting sets weighing 20 lb. which can signal the position of the scattered boats to the ‘mother’ fishing ship. As a boat sets out fishing, it carries one of these sets. When the work is done, if there is a dense fog, the dory sends out a code signal to the mother ship. By means of the radio direction finder the ship carries, the direction of the dory from it is easily found. Tests made from a schooner show that dories can be located up to a distance of six miles. The battery used can give out signals for a week. A descriptin of the method is given in Electronics of August.
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Fog Peril to Fishermen Lessened. Nature 134, 623–624 (1934). https://doi.org/10.1038/134623d0
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DOI: https://doi.org/10.1038/134623d0