Satlab Hydrobeam M4

Satlab “Hydrobeam M4” Dual-Frequency Echosounder

by RASA Surveying Instruments with Satlab

The Satlab Hydrobeam M4 is a Swedish-made, dual-frequency echosounder designed for bathymetric data collection. Its lightweight and compact design includes a circular transducer, allowing for deployment on various platforms such as USVs, AUVs, ROVs, and small vessels. The system features built-in motion and sound velocity sensors to reduce calibration requirements and stabilize data collection on moving platforms. It connects with Satlab GNSS and third-party systems to function within standard survey operations.

The M4 is utilized for hydrographic surveys in shallow coastal waters, inland rivers, lakes, and reservoirs. Its dual-frequency operation and wide swath coverage support applications like dredging monitoring, underwater construction, and environmental research by capturing both soft sediment layers and hard bottoms. The system’s design allows for broader area mapping per pass, reducing overall field time.