echo sounder
Sonar depth device
An echo sounder is a device that measures water depth by timing how long sound pulses take to bounce off the bottom and return.
Ships use echo sounders for navigation and to avoid running aground.
The technology also maps underwater terrain and locates fish: The echo sounder showed a school of tuna at forty meters.
Distance below surface
- bathymetrySubaqueous topographical measurement
- contourBounding line of shape
- channelPassage for transmission
- shoalShallow water hazard
reef · shallow · fathom · chart · hazard · anchorage · passage · fairway
Energy form converter
- pingBrief metallic tone
- sonarUnderwater detection by echoes
- frequencyRate of recurrence
- beamStructural support member
pulse · display · depth finder · fish finder · deadzone · gain · sensitivity · water column
Scientific study of seas
- hydrographyStudy of water bodies
- sedimentParticles settling in liquid
- substrateUnderlying supporting material
- acousticRelating to sound
propagation · reflection · signal processing · research vessel · water column · salinity · data logging
Sonar displaying underwater life
- schoolPlace of instruction
- baitfishSmall prey fish for angling
- targetObject of pursuit
- archCurved spanning structure
thermocline · structure · bottom dweller · mark · hardness · vegetation · drop-off · ledge
depth
Distance below surface
- bathymetrySubaqueous topographical measurement
- contourBounding line of shape
- channelPassage for transmission
shoal · reef · shallow · fathom · chart · hazard · anchorage · passage · fairway · safe water
transducer
Energy form converter
beam · pulse · display · depth finder · fish finder · deadzone · gain · sensitivity · water column · reading
oceanography
Scientific study of seas
- hydrographyStudy of water bodies
- sedimentParticles settling in liquid
- substrateUnderlying supporting material
acoustic · propagation · reflection · signal processing · research vessel · water column · salinity · data logging
fish finder
Sonar displaying underwater life
arch · thermocline · structure · bottom dweller · mark · hardness · vegetation · drop-off · ledge · fish symbol
echo sounderradar
Radio-wave object detection
visual observation · satellite imagery · photogrammetry · optical sensor · camera system
echo, echoing, sounding, echoed, sounded, resound, resounding, soundproof, sounder