Hydrography

Accurate measurements of roll, pitch, and heave are crucial for achieving optimal results when compensating multibeam echosounders for vessel motion.

The future of sonar motion compensation - High-Precision - Always reliable - Low cost

The Game-Changer for Sonar Accuracy in Challenging Environments
Motion Reference Units (MRUs) are crucial in bathymetric survey technology, providing precise motion compensation data to ensure reliable and accurate seafloor mapping. The Norwegian Subsea MRU has redefined what is possible, delivering exceptional performance even in incredibly challenging conditions. Our technology provides high-accuracy roll, pitch, and heave compensation without dependency on RTK or GNSS signals, eliminating common vulnerabilities in sonar mapping.

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illustration of our MRU Marine showing roll, pitch, yaw, surge, sway and heave

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Designed specifically for marine applications

The NORSUB MRU Marine is a robust and waterproof motion reference unit designed specifically for marine applications, with flexible communication options and the option to include a magnetometer.

Hydrography

Hydrography

The future of sonar motion compensation - High-Precision - Always reliable - Low cost

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Designed specifically for marine applications

Sonar systems that use our MRUs

Related questions

What is the difference between the MRU Marine and MRU Marine SW?

What is a Gyrocompass?

What is the role of motion monitoring in offshore operations?

Further reading

Advanced motion compensation for sonars introduced at Ocean Business 2025

MRUs for vessel performance optimisation in focus at Europort 2025

Research Project to Test Value of MRU Data for Vessel Performance and Carbon Reduction

Hydrography

Hydrography

The future of sonar motion compensation - High-Precision - Always reliable - Low cost

Stacked column section

Column 1 title

Column 2 title

Designed specifically for marine applications

Sonar systems that use our MRUs