general/sonar
Surf Wiki
Synthetic-aperture sonar
Form of sonar using post-processing of sonar data
Acoustic signature
Characteristic combination of sound emissons
Hydrophone
Underwater microphone
Scientific echosounder
Device using sonar for underwater measurements
Side-scan sonar
Tool for seafloor mapping
Tonpilz
Type of underwater electro-acoustic transducer
Foxer
British World War II acoustic torpedo decoy
Sonar (keelboat)
Sailboat class