GeoAcoustics Launches GeoMB Multibeam Echosounder at Oceanology International

PRESS RELEASE

9th March 2026 – For Immediate Release

ExCel London, UK: Sonar manufacturer GeoAcoustics Ltd has expanded its hydroacoustic portfolio with the launch of GeoMB, its first multibeam echosounder. Responding to demand for a GeoAcoustics multibeam solution, GeoMB makes its industry debut this week at Oceanology International 2026 at ExCeL London (stand P400).

Featuring an embedded Applanix AP+ integrated GNSS/IMU solution as well as a Sound Velocity Sensor, GeoMB is an all-in-one multibeam solution engineered for performance, reliability and data integrity. With integrated auxiliary sensors, it delivers dependable, high-resolution bathymetric data in a compact and efficient package.

Operating at 400 kHz, GeoMB produces dense, high-quality depth data with wide swath coverage and excellent vertical resolution, supporting hydrographic surveys that meet demanding accuracy requirements. The system features 512 beams and swath coverage of more than 140 degrees, balancing coverage and detail for precision seabed mapping. Sounding depths extend from 0.2 m to beyond 200 m, enabling operations from shallow inshore environments to deeper coastal waters.

Designed for practical deployment, GeoMB is optimised for small survey vessels, vessels of opportunity and uncrewed surface platforms, combining low power consumption with a robust mechanical design. The compact transducer measures 220 mm square and 181 mm high, weighing 7.5 kg, with a 3 kg deck unit, making installation straightforward on constrained platforms.

Integrated beamforming, real-time motion and sound velocity compensation, and seamless interfacing with standard navigation and acquisition systems ensure consistent performance in dynamic offshore environments. The outcome is precision data, delivered efficiently and repeatably.

“GeoMB represents a natural evolution for GeoAcoustics as a company long established in manufacturing high-quality sonars,” says Richard Dowdeswell, CCO, GeoAcoustics Ltd. “Building on the GeoSwath legacy, and in direct response to customer demand for a GeoAcoustics developed multibeam, we are now extending our capability into this sector. GeoMB adds deeper water capability while maintaining the data integrity, field reliability and global support that define the GeoAcoustics brand.”

GeoMB supports applications including hydrographic and dredging surveys, environmental surveys, rapid environmental assessment, inland waterway and seabed mapping, and infrastructure inspection.

Engineered to GeoAcoustics’ exacting standards, and backed by a channel partner network providing sales, service and support in 70 countries, GeoMB brings multibeam capability into the GeoAcoustics portfolio alongside side scan sonars and sub-bottom profiler rangers, all with the assurance of global support.

Visit GeoAcoustics on stand P400 at Oceanology International to learn more.

For further information, contact sales@geoacoustics.com or visit www.geoacoustics.com.

About GeoAcoustics Ltd

GeoAcoustics Ltd delivers innovative, field-proven technologies for customers working in the inland waterway and marine hydrographic surveying, dredging and marine-research fields. Headquartered in Great Yarmouth, UK, with a global presence through a network of channel partners, the company specialises in the design, development, manufacture, and commissioning of advanced side scan, bathymetry, and sub-bottom profiling sonar-systems.

GeoAcoustics Ltd has been a partner for the offshore energy, subsea, and marine survey sectors since 1978 and has had two different corporate owners in this time. The company returned to independent ownership in December 2020, and continues to develop innovative sonar products.