The system may be repeatedly deployed in a slack surface buoy mooring in water depths ranging from 20 to 1,000 feet (6.1 to 304.8 meters).

The buoy system consists of a buoyant float assembly, an electronics package with VHF and UHF antennas, and omni-directional hydrophone with an electromechanical extension cable, and a rechargeable battery pack.

Underwater signals are received by the hydrophone and transmitted to the shipboard telemetry system via a VHF radio transmission where the data is transferred to a data handling system.

The buoy electronics are powered by a self-contained battery power supply.

Multiple single channel acoustic monitoring systems may be deployed simultaneously. A shipboard command transmitter may be used to control multiple systems via a UHF radio link as an alternative to the manual controls on the buoy system electronics package.

Applications:
• Ambient nosie measurements
• Signal / noise characterization
• Marine mammal monitoring
• Acoustic tracking system
• Source signature monitor

System Specifications:

Hydrophone
Sensitivity	-180 dB re: 1V/µPa
Frequency Response	10 Hz to 50 kHz
Self Noise	43 dB re: 1 µPa/√Hz @ 100 Hz 27 dB re: 1 µPa/√Hz @ 1,000 Hz 15 dB re: 1 µPa/√Hz @ 10,000 Hz 10 dB re: 1 µPa/√Hz @ 50,000 Hz
Dynamic Range	110 dB minimum (spectral)
Directionality	Omnidirectional to 50 kHz (3 dB)

Electronics Package
VHF transmit frequency	136.0 - 173.5 MHz
VHF transmit power	1 Watt
Gain	0 dB or 20 dB (selectable)

Battery
Life	48 hours
Supply	14 VDC, 25 Ah