SURVEYShopMultibeam EchosoundersGeoAcoustics Ltd GeoSwath 4R 500 kHz

GeoAcoustics Ltd GeoSwath 4R 500 kHz

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GeoSwath 4R offers the industry’s most efficient simultaneous swath bathymetry and side scan seabed map¬ping system for shallow water. Bathymetry data accuracies have been shown to exceed the IHO Standards for Hydrographic Surveys, while providing seafloor coverage of up to 12 times the water depth and data from nadir to the waterline.

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SKU: GeoAcoustics Ltd GeoSwath 4R 500 kHz Category:


The side scan data can be calibrated for repeatable results to provide seabed classification and monitoring. The new hardware provides twice the data density and increased nadir performance compared to its predecessors in a rugged portable design. The specifically developed GS4 acquisition and processing software included with the system delivers automatically cleaned data in real time. The splash protected deck unit is designed to be deployed on small vessels, RIBs and jet skis equipped with a 24 V power supply.

System Components

The GeoSwath 4R turn-key solution comprises a dual transducer head and a splash protected deck unit containing the complete sonar electronics, which can be interfaced via an Ethernet connection to the control laptop PC running the new GS4 software.

Dual sonar head

The transducers are available in a choice of three frequencies: 125, 250, 500 kHz, varying in depth performance and data resolution depending on the survey task. A wide range of motion reference units (MRU) and sound velocity sensors (SVS) can be mounted on the compact head. This has been designed for easy deployment on a supplied pole for over-the side or bow-mount options.

Deck Unit

The compact splash protected housing contains the complete system electronics. All peripheral sensors (position, motion, heading, transducer face sound velocity, sound velocity profiler and tide) are interfaced directly via IP66 rated connections. The system has been newly designed for increased performance. It offers twice the data density compared to its previous versions and increased nadir performance. All peripheral sensors (position, motion, heading, transducer face sound velocity, sound velocity profiler and tide) are interfaced directly.

GS4 Software

The GS4 software has been specifically designed for the new GeoSwath 4. It is included with the system and provides a complete project based solution; acquisition, storing and editing of sonar and ancillary data, grid-based patch test calibration, data processing, advanced bathymetry data gridding, side scan mosaicing and 3D data visualisation. Newly developed filter algorithms provide real time processed data with minimum user intervention even in difficult survey situations involving vertical structures, shipwrecks and steep seabed slopes.

GeoSwath 4R

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Additional information

Date of first release


Required pitch uncertainty [deg]


Max. swath width [m]


Equal footprint spacing


Intended S44 order


Real-time correction of refraction at transducer head


Real-time integration of SV-profile


Motion sensors compatible to the system

All standard

Required roll uncertainty [deg]


max Swath Update Rate

30 per second (range dependant)

Required heave uncertainty [m]


Compatible software

All standard processing packages including QPS Qinsy and Hypack (real time) and Caris HIPS and SIPS; IVS3D Fledermaus

Compatible hardware

Any standard.

Real-time access procedure

Data broadcast via Ethernet or file export

Distinguishable features

Co-registered side scan as well as bathymetry, Wide 240 degree beam angle.


GeoAcoustics Ltd


GeoAcoustics Ltd

Shuttleworth Close

NR31 0NQ Great Yarmouth

United Kingdom

Transducer Type

Compact Dual Head

Min. beam width along track [deg]



Hull mounted & Portable

Max. power consumption [W]




Length [m]


Width [m]


Height [m]


Min. external power [V]


Max. external power [V]


Transducer Head Weight, appr. including peripherals

16.8 kg

Ping frequency [Hz]


Type of system

Phase Measuring Bathymetric Sonar

Min. frequency [kHz]


Max. frequency [kHz]


Max. depth [m]


Depth resolution [mm]


Max. Slant Range [m]


Max. swath as a function of depth