Compact All-in-One Multibeam Echosounder for USVs

Hydro-Tech has launched a major advancement in bathymetric surveying technology with the release of a fully integrated multibeam echosounder designed specifically for uncrewed surface vessels (USVs).

The new MS400C system brings together sonar processing, inertial navigation, GNSS positioning, and sound velocity sensing into a single, streamlined unit—eliminating the need for bulky auxiliary hardware and complex integration.

With unmanned systems playing an increasingly critical role in hydrographic surveying, the MS400C addresses key deployment challenges faced by USV operators. Its compact, lightweight design allows for direct mounting on the hull of small platforms, minimizing payload space requirements and simplifying vessel architecture. By integrating the sonar processor, IMU, dual GNSS, and SVS into one enclosed sonar head, the system dramatically reduces cabling, setup time, and training overhead.

The MS400C is designed for fast, plug-and-play operation in the field. Installation involves connecting just a few cables—one to the IPC and power supply, and two to the primary and secondary GNSS antennas. With spatial relationships between components preconfigured during system integration, operators can deploy and start surveying in minutes. This reduces the risk of configuration errors and ensures consistent data quality from mission to mission.

All core electronics are housed in a sealed enclosure that sits in direct contact with the water, using natural convection to regulate temperature. By eliminating separate topside sonar or navigation computers—often exposed to the sun—the MS400C avoids common overheating issues and supports continuous operation in high-temperature environments.

Equipped with Auto Survey functionality, the system automatically calibrates working parameters based on water conditions, further streamlining pre-survey procedures. Real-time roll compensation and accurate attitude data from the internal IMU—combined with onboard sound velocity profiling—ensure high-fidelity depth measurements, even in dynamic conditions.

Designed from the ground up for integration with autonomous and remotely operated survey platforms, the MS400C supports seamless data collection in confined or hard-to-reach waterways. Its low power consumption and compact form factor make it especially well suited to inland and nearshore applications where space and energy resources are limited.

By combining performance, integration, and ease of use, Hydro-Tech’s MS400C paves the way for more capable, efficient, and reliable bathymetric surveying with uncrewed platforms—offering a clear advantage in the evolution of autonomous hydrographic operations.

Hydro-Tech is exhibiting at Ocean Business 2025, April 8-10, Southampton, at Stand W70.