Flextensor transducer
Flexural cylinder projector
Flexural disk transducer
Flexural plate sound transducer having low resonant frequency
Fluidborne sound projector
Fluidborne sound projector with sweep cleaning facilities
Folded hydrophone array for narrow marine vehicles
Folded sagnac sensor array
Folded sagnac sensor array
Folded sagnac sensor array
Folded shell projector (FSP)
Free flooding hydrophone mounting
Frequency agile sonic transducer
Frequency independent acoustic antenna
Frequency modulated laser diode
Gas projection device sometimes with a burst disk, producing...
Gas projection device sometimes with a burst disk, producing...
Gas-coupled laser acoustic detection
Gas-operated apparatus for making a noise under water
Gel-filled seismic streamer cable