sonar

The submarine used sonar to navigate underwater.

Scientists use sonar to study marine life.

The sonar system detected the presence of a large object.

The fishing boat relies on sonar to locate schools of fish.

Sonar technology has improved over the years.

The military uses sonar for detecting submarines.

Sonar can be used for underwater communication.

The sonar operator listened for echoes in the water.

The ship's sonar equipment malfunctioned during the mission.

The researchers analyzed the sonar data to map the ocean floor.