Hydro-Tech debuts upgraded multi-frequency multibeam MS8240
Hydro-Tech has introduced the MS8240, a next-generation multibeam echosounder with adjustable frequencies from 150kHz to 450kHz in 10kHz increments, plus high-frequency options up to 700kHz. Combining large-scale coverage with high-speed operation, it is well-suited for surveying inland rivers, reservoirs, lakes and shallow coastal waters.
Unlike conventional single-frequency multibeam systems, the MS8240 offers greater flexibility, ultra-high resolution and enhanced target detection at higher frequencies, while lower frequencies provide a wider depth range for versatile applications.
To assess its performance, Hydro-Tech conducted sea trials, comparing the MS8240 to an established multibeam model (RX). Tests in a river near a bridge (depths: 8–13m) showcased its integration with the company’s latest survey and data acquisition software, enabling real-time 3D point cloud visualization.
Comparative trials
In comparative trials, the MS8240 demonstrated a capacity for capturing detailed underwater structures with high precision. In surveys of the bridge pier, the system accurately depicted right-angle transitions between the column and foundation, maintaining the integrity of structural features. In contrast, the comparison model produced rounded edges and less-defined side contours. A top-down perspective further confirmed that the MS8240 preserved the shape of the bridge pier’s foot edges with greater clarity.
The trials also highlighted the MS8240’s ability to detect fine details in small target features. Hydro-Tech attributes this performance to a non-smoothing data processing approach, which prioritizes accuracy over aesthetic refinement. While this method presents challenges in algorithm development and may result in less visually uniform survey data in certain conditions, it aligns with the company’s objective of delivering precise underwater mapping.
Key specifications of the MS8240 include a swath sector and ping rate comparable to leading multibeam systems, a broad frequency range supporting diverse applications, and ultra-high resolution for fine feature detection. The system is also designed with lower power consumption and a compact deck unit, making it adaptable to various deployment platforms.
Hydro-Tech will be showcasing the MS8240 at Ocean Business, where industry professionals can observe the system’s capabilities at first hand.
