This flange plate held a sonar device used during drilling operations.

Now it was all up to that sonar device.

"You have a backup on that sonar sending device?"

The women so change but when the soldier uses the sonar device it is revealed to have stopped working.

A sonar device which enables Gavan to detect any movement and sound in the area.

Thus, the jet-marine could not be detected by sonar devices.

You have a sonar device at danger pitch there?

The researchers have also used a multibeam sonar device in deeper water.

Mine hunters search the water for mines with sonar devices.

Only one effect registered that hue on a sonar device.