Following are all the sonar like words, in the list below.
ECHO SOUNDER
100% like sonar
ASDIC
100% like sonar
RADAR
66.66% like sonar
ULTRASOUND
66.64% like sonar
SOUND
66.05% like sonar
ECHOSOUNDER
33.43% like sonar
ECHOLOCATION
33.43% like sonar
SIDESCAN
33.43% like sonar
HYDROPHONE
33.43% like sonar
FATHOMETER
33.43% like sonar
HYDROPHONES
33.43% like sonar
BIOSONAR
33.43% like sonar
HYDROACOUSTIC
33.43% like sonar
PINGER
33.43% like sonar
ULTRASONIC
33.43% like sonar
TOWFISH
33.43% like sonar
SONOBUOY
33.43% like sonar
ECHOLOCATE
33.43% like sonar
TRANSDUCER
33.43% like sonar
SONOBUOYS
33.43% like sonar
SUBMARINE
33.43% like sonar
INFRASONIC
33.43% like sonar
ANTISUBMARINE
33.43% like sonar
PINGERS
33.43% like sonar
SONOGRAPH
33.43% like sonar
VELOCIMETER
33.43% like sonar
ECHOGRAM
33.43% like sonar
RADARS
33.43% like sonar
MULTISTATIC
33.43% like sonar
PARAVANE
33.43% like sonar
SUBMERSIBLE
33.43% like sonar
MINESWEEPING
33.43% like sonar
LIDAR
33.43% like sonar
MINISUB
33.43% like sonar
GYROCOMPASS
33.43% like sonar
UNDERWATER
33.43% like sonar
TRANSDUCERS
33.43% like sonar
RANGEFINDING
33.43% like sonar
SUBMARINES
33.43% like sonar
ACOUSTIC
33.43% like sonar
GEOPHONE
33.43% like sonar
HYDROACOUSTICS
33.43% like sonar
NAVIGATIONAL
33.43% like sonar
BATHYMETRIC
33.43% like sonar
SEARCHLIGHTS
33.43% like sonar
SHIPBORNE
33.43% like sonar
IMAGING
33.43% like sonar
ELECTROLOCATION
33.43% like sonar
TELEVIEWER
33.43% like sonar
BISTATIC
33.43% like sonar
SENSORS
33.43% like sonar
MULTIBEAM
33.43% like sonar
OPTRONIC
33.43% like sonar
OCEANOGRAPHIC
33.43% like sonar
SOUNDERS
33.43% like sonar
LASER
33.43% like sonar
ELECTRORECEPTION
33.43% like sonar
INFRASOUND
33.43% like sonar
SENSOR
33.43% like sonar
LORAN
33.43% like sonar
MISSILE
33.43% like sonar
LOWRANCE
33.43% like sonar
GRADIOMETER
33.43% like sonar
SEARCHLIGHT
33.43% like sonar
ECHOGRAMS
33.43% like sonar
MULTISENSOR
33.43% like sonar
PROFILER
33.43% like sonar
SONIC
33.43% like sonar
SOUNDER
33.43% like sonar
TELEMETERING
33.43% like sonar
SUPERCAVITATING
33.43% like sonar
SONDE
33.43% like sonar
SPECTROGRAPHIC
33.43% like sonar
MANTA
33.43% like sonar
SONOGRAPHY
33.43% like sonar
TELEMETRY
33.43% like sonar
ANTISATELLITE
33.43% like sonar
DOPPLER SONAR
33.43% like sonar
PING
33.43% like sonar
ECHO SOUNDING
33.43% like sonar
SOFAR
33.43% like sonar
SOUNDOME
33.43% like sonar
FISHFINDER
33.43% like sonar
DUNKER
33.43% like sonar
SEA-LIGHT
33.43% like sonar
NAUSCOPY
33.43% like sonar
SEA LIGHT
33.43% like sonar
SEAMARK
33.43% like sonar
SATNAV
33.43% like sonar
VANE
33.43% like sonar
NAVIGATOR
33.43% like sonar
SAIL
33.43% like sonar
SOUNDING LINE
33.43% like sonar
RADIO OFFICER
33.43% like sonar
LONGUE-VUE
33.43% like sonar
FOXER
33.43% like sonar
SURFACE CLUTTER
33.43% like sonar
SOUNDING
33.43% like sonar
RANGE LIGHT
33.43% like sonar
ORTHODROMICS
33.43% like sonar