^"Biography of Dr. Herbert Grove Dorsey". National Oceanic & Atmospheric Administration (NOAA). NOAA Central Library. 2006. مؤرشف من الأصل في 2017-01-07. اطلع عليه بتاريخ 2015-11-19. He invented the fathometer, and developed RAR on the Atlantic coast by floating hydrophone stations and Sono Radio Buoys.
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Patton، R.F. (1934)، FIELD ENGINEERS BULLETIN – U.S. COAST & GEODETIC SURVEY(PDF)، The Director, U. S. Coast and Geodetic Survey، ص. 15، مؤرشف من الأصل(PDF) في 2016-03-04، اطلع عليه بتاريخ 2015-11-19، It is with pleasure that I congratulate you on the successful demonstration of this development, and as a slight token of the appreciation of the Bureau, hereby direct that the instrument shall be designated as the Dorsey Fathometer, United States Coast and Geodetic Survey.
^"Echo Sounding / Early Sound Methods". National Oceanic & Atmospheric Administration (NOAA). NOAA Central Library. 2006. مؤرشف من الأصل في 2018-09-14. In answer to the need for a more accurate depth registering device, Dr. Herbert Grove Dorsey, who later joined the C&GS, devised a visual indicating device for measuring relatively short time intervals and by which shoal and deep depths could be registered. In 1925, the C&GS obtained the very first Fathometer, designed and built by the Submarine Signal Company.
