fathometer

noun 0.727

echo sounder

noun 0.661

bathymetry

noun 0.622

sonar

noun 0.599

sonobuoy

noun 0.598

deep sea

noun 0.593

depth charge

noun 0.592

dropsonde

noun 0.579

depth

noun 0.578

sonarman

noun 0.572

hydrophone

noun 0.569

sounder

noun 0.558

normal depth

noun 0.557

deep water

noun 0.557

tide gauge

noun 0.556

rangefinder

noun 0.554

scatterometer

noun 0.542

dive computer

noun 0.542

hydrographer

noun 0.542

ionosonde

noun 0.535

seafloor

noun 0.531

radiosonde

noun 0.530

deepness

noun 0.526

underwater

noun 0.524

bathysphere

noun 0.521

submersible

noun 0.520

sonographer

noun 0.519

demersal

noun 0.518

bathyscaphe

noun 0.517

deep

noun 0.513

sonde

noun 0.513

sounding

noun 0.511

transducer

noun 0.510

altimeter

noun 0.510

metal detector

noun 0.508

doppler

noun 0.508

gravimeter

noun 0.508

audiometer

noun 0.507

dredger

noun 0.507

densitometer

noun 0.506

altimetry

noun 0.505

ultrasound

noun 0.505

focal depth

noun 0.505

hydroacoustics

noun 0.505

oceanographer

noun 0.503

total station

noun 0.502

hypsometer

noun 0.501