Fathometern.

Brit.

/faˈðɒmᵻtə/, U.S.

/fæˈðɑmədər/,

/ˈfæðə(m)ˌmidər/

Forms: Also fathometer.

Etymology: < fatho- (in fathom n.) + -meter comb. form².

An instrument for the determination of the depth of the sea by measuring the time taken by a sound-wave to reach the bottom and return.

ΘΚΠ

society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > [noun] > depth-finder

depth recorder1911

depth finder1923

Fathometer1925

echo-sounder1927

echometer1937

1925 Hydrographic Rev. II. ii. 140 (heading) The ‘Fathometer’ of the Submarine Signal Co. of Boston. This apparatus, also based on the same principle as that of Fessenden, differs..by the particular feature only, viz. the angle to be measured is observed by means of a lighted index..which is illuminated when it receives the reflected acoustic signal.

1927 S. H. Long Navigational Wireless xi. 149 Another method of determining the sounding of a ship consists of a piece of apparatus..called the ‘Fathometer’. This instrument is based on the principle of emitting a sound wave from a sound transmitter, casuing this wave to be reflected from the sea~bed, and receiving the reflected sound wave on a receiver.

1937 Geogr. Jrnl. 90 543 Her echo-sounding device (known in the U.S.A. as the Fathometer).

1971 Islander (Victoria, Brit. Columbia) 14 Mar. 10/3 The speedometer and log was helpful in establishing position and the fathometer very useful when entering an unfamiliar anchorage.

This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2022).

单词	fathometer
释义	Fathometern. Brit. /faˈðɒmᵻtə/, U.S. /fæˈðɑmədər/, /ˈfæðə(m)ˌmidər/ Forms: Also fathometer. Etymology: < fatho- (in fathom n.) + -meter comb. form². An instrument for the determination of the depth of the sea by measuring the time taken by a sound-wave to reach the bottom and return. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > [noun] > depth-finder depth recorder1911 depth finder1923 Fathometer1925 echo-sounder1927 echometer1937 1925 Hydrographic Rev. II. ii. 140 (heading) The ‘Fathometer’ of the Submarine Signal Co. of Boston. This apparatus, also based on the same principle as that of Fessenden, differs..by the particular feature only, viz. the angle to be measured is observed by means of a lighted index..which is illuminated when it receives the reflected acoustic signal. 1927 S. H. Long Navigational Wireless xi. 149 Another method of determining the sounding of a ship consists of a piece of apparatus..called the ‘Fathometer’. This instrument is based on the principle of emitting a sound wave from a sound transmitter, casuing this wave to be reflected from the sea~bed, and receiving the reflected sound wave on a receiver. 1937 Geogr. Jrnl. 90 543 Her echo-sounding device (known in the U.S.A. as the Fathometer). 1971 Islander (Victoria, Brit. Columbia) 14 Mar. 10/3 The speedometer and log was helpful in establishing position and the fathometer very useful when entering an unfamiliar anchorage. This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2022). < n.1925
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