EM2042 Multibeam Echo Sounder
The right choice for shallow water mapping applications
Introducing the EM2042, the next generation of EM multibeam echo sounder that takes seabed mapping to new depths, by delivering unparalleled accuracy and resolution to your surveys. In the field of hydrography, offshore industry, dredging and marine science, the EM2042 is the perfect tool for your underwater mapping needs on any crewed or uncrewed surface platform. The ease of use and advanced features make it a must-have for professionals who demand the best data quality, reliability, and flexibility.
Components
The EM2042 can be delivered with a 0.4 or 0.7 beam width (@400kHz) transmitter (TX), with a single or dual 0.7 receiver (RX) optionally embedding a KONGSBERG miniMRU, and an AML sound velocity sensor. The TX and RX are connected to the topside processing unit through a single subsea cable, making
it easy to set up and operate. EM2042 has the unrivaled dual RX variation, requiring only one TX array, generating up to 4096 soundings per swath. In addition, a specialized dual TX and RX setup solves mounting scenarios where a large separation between receivers is required. The unique EM2042 multi-transmitter combines three sectors to enable dynamic focusing on both transmission and reception, as well as roll, pitch and real 3-sector yaw stabilization.
The EM2042 transducers are 60% lighter than the previous generation, and have new, state of the art electronics greatly reducing the total power consumption of the system. A custom-made portable bracket for over-the-board installations can accommodate integration, in a fixed location with known offsets, for the most used INS sensors in hydrography, allowing a quick and easy setup.
Expanded frequency range – Now with a new band
EM2042 features a wideband frequency range from 150 kHz to 700 kHz, offering different modes for various applications:
- 300 kHz: Ideal for most mapping tasks, balancing range and resolution
- 400 kHz: Optimized for inspection work
- 600 kHz and 700 kHz: Enhance small object detection and 3D mapping
- 200 kHz: Extends the range down to 600 meters
- A new 150 kHz band complements EM® MultiFrequency
mode, improving seabed classification in a single pass
New feature – Ready for PredictivePitchTM
- This new and cutting-edge feature uses KONGSBERG Seapath algorithm to accurately steer the beams along track to their future pitch angle. This provides more accurate and reliable detections even on fast-moving platforms like small USVs exposed to challenging sea conditions.
New Feature – Ready for QuadSwathTM
The EM 2042 is ready to deliver up to 4 swaths per ping cycle, ensuring the most demanding sounding density requirements, and improving the definition of seafloor features in high-speed surveys.
