Ship Motion Monitoring

Precise motion measurements are essential for vessel digitalization, supporting fuel optimization, route planning, cargo safety and structural health.

Accurate Motion Measurements Are Essential for Vessel Performance Optimization

Many are unaware of the crucial role that Motion Reference Unit (MRU) measurements play in optimizing propulsion and reducing fuel consumption. MRU data is primarily needed to establish the correlation between sea conditions—such as waves—the vessel's response, and the main engine (ME) consumption.

Currently, 80% of vessels do not have MRU motion measurements available.

With the ongoing IMO reporting requirements, most vessels have flowmeters hardwired to their chosen vessel performance software. However, this is not the case for MRUs.

Install MRUs on your vessel today to further improve vessel performance and reduce climate emissions.

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

Why a Norwegian Subsea MRU is exceptionally suitable for ship motion monitoring

The NORSUB MRUs reliably and accurately measure all six degrees of freedom year after year. Additionally, measurement data can be logged internally and downloaded as needed. Statistical features, such as significant amplitude and peak frequency over a moving window, can also be measured. For example, the significant heave motion amplitude and peak period during the last hour can be selected as an output measurement.

The NORSUB MRUs are designed for easy installation and use. They are plug and play devices and can be delivered with a junction box or with regular Ethernet (RJ45) connectivity, such as the NORSUB eMRU series. This streamlined approach reduces cable and installation costs, providing a cost-effective solution for ship motion monitoring applications.

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MRUs designed for your needs

Norwegian Subsea produces industry-leading Motion Reference Units (MRUs) for subsea, marine, and land applications. Our MRUs are robust and affordable, and offer high-accuracy performance, along with a plug-and-play interface.

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