In Underwater acoustic systems buoy



Learn more

remote-buoy-for-acoustic-noise-measurements.remo-buoy buoy

The buoy acquires and records underwater acoustic data making them available to a remote station installed on board a vessel or onshore. The system is made of a preamplified hydrophone with its suspension cable connected to an ultra light spar buoy and a receiving station. The underwater acoustic station and data processing hardware have been designed in order to minimise low frequency noise. Data (10 – 22.000 Hz bandwidth) are recorded on the buoy embedded PC equipped with a solid state disk. GPS data are also recorded on the buoy and at the receiving station. The receiving unit allow to connect a standard PC to the buoy via a wide band wireless link, to send commands and to receive acoustic (.wav format) and GPS data in real time. The .wav files and the calibration diagram supplied with the system allow to calculate the acoustic pressure at the hydrophone. GPS data allow to obtain the buoy-receiving station range for transmission loss estimation.


• Accuracy: reliable low frequancy measurements.
• Sensitivity: Data acquired by an high wuality professional Co.l.mar. preamplified hydrophone.
• Compatibility: the system is compatible with any software reading .wav files, optionally data analysis software are available.
• Reliability: hard enviroment design. In case of radio link drop the buoy keeps acquiring and recording. No data is lost.
• Security: copy of the data is stored on the solid state disk inside the buoy.
• Functionally: only 30 kg weight, can be handled by a single man without lifting tools.

Technical specifications

• Colmar GP1280 omnidirectional pramplified hydrophone

• Hydrophone sensitivity: -170 dB re 1 V/uPa

• Low frequency attenuation 6dB/octave with -3db @ 740Hz (customisable)

• Sampling: 96.000 Hz – 16 bit  

• System Noise lower then Sea State Zero

• Battery life: over 12 hours

• Solid state memory: 32GB (more then 40 hours recording time)

• Wireless Link: 2.4GHz up to 5Mbit/s (>500m range)

• N°2 12 channel GPS, Waas / Egnos enabled

Buoy body in aluminium treated with hard oxidation, dimension 14x180cm, antenna 150cm

Buoy weight in air 30 kg

Spar- buoy design to stabilise the antennas

Vertical hydrophone oscillations damping system

Hydrophone-waves decoupling system

Hydrophone frame for hydrophone protection and mechanical isolation


Self-Noise-Assessment, Ambient Noise Measurement, Environmental Monitoring, Passive monitoring.

Related products


Re.Mo. buoy Download

Product sheet – buoy