MRU Subsea
The NORSUB MRU SUBSEA is an ideal choice for accurate and robust subsea motion measurements. With a depth rating of up to 6000 meters, this compact and small-sized motion sensor offers versatility in installation.

The NORSUB MRU SUBSEA is an ideal choice for accurate and robust subsea motion measurements. With a depth rating of up to 6000 meters, this compact and small-sized motion sensor offers versatility in installation.

Roll and pitch dynamic accuracy of 0.05° Heave accuracy: 5 cm / 5 %
The 6000 series provides high performance 0.02° roll and pitch accuracy
The 9000 series achieves exceptional precision with 0.01° roll and pitch accuracy
The MRU Subsea can be easily placed in various locations due to its small size and footprint. Communication options include ethernet, RS-232, and RS-485/422, while power and communication are facilitated through the Subconn connector.
For enhanced functionality, the Subsea MRU can be equipped with a high-end magnetometer, ensuring precise magnetic heading measurements.
The Subsea MRU is available in three versions, 3000, 6000, and 9000, to cater for different accuracy requirements and budgets.
Additionally, the Subsea MRU is offered in an inclinometer version that focuses on continuous monitoring of the roll/pitch angle of subsea templates at a lower cost. This eliminates the need for expensive subsea rentals during installation.

High accuracy roll, pitch and heave, even in irregular sea states.

Low weight and small footprint make installation and handling easy.

Depth rating at 6000 m enables motion measurements in ultra deep waters.

Experience enhanced efficiency and performance with MRU Insight. Analyse, visualise, and integrate your motion data effortlessly, gaining valuable insights. From real-time monitoring to comprehensive reporting, MRU Insights revolutionises MRU data utilisation for informed decision-making, enhanced safety, and improved performance. Elevate your marine operations with MRU Insights and unlock the full potential of your MRU investment.

From bathymetric surveys to subsea inspections and wave radar systems, our MRUs have been put to work in a wide range of challenging environments during 2025. As the year draws to a close we take a quick look back at some of the highlights, applications, and collaborations that helped shape another strong year of progress for Norwegian Subsea.
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Norwegian Subsea is bringing its acclaimed MRU technology to sonar-based applications with the introduction of an updated MRU lineup featuring full aiding capabilities at Ocean Business 2025 this week.
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Norwegian Subsea has returned from a successful trip to Shanghai, where our compact Motion Reference Units (MRUs) drew strong interest from across the Chinese maritime supply chain during the Marintec China 2025 exhibition. As one of the world’s leading maritime events, Marintec provided an ideal platform to engage with shipbuilders, integrators and equipment manufacturers in a region where innovation and scale go hand in hand.
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