eMRU image


The NORSUB eMRU is a compact unit with easy installation process, supporting various communication protocols and featuring a dust and splash-proof design.


MRU 3000 badge

Roll and pitch dynamic accuracy of 0.05° Heave accuracy: 5 cm / 5 %

MRU 6000 badge

The 6000 series improves it further to 0.02°

MRU 9000 badge

The 9000 series achieves exceptional precision with 0.01°

Product overview

The NORSUB eMRU is a small, yet accurate motion reference unit that is easy to install due to its passive Power over Ethernet (PoE) interface. A regular RJ45 ethernet connector is used for both power and communication so that any cat5e cable can be connected to interface the eMRU. This makes installation fast and cabling costs low.

The eMRU is configured via ethernet (TCP) and measurements data can be acquired from UDP messages, Modbus TCP or Ethernet/IP.

The eMRU is dust and splash proof and is suitable for mounting indoors or inside a control box.

The eMRU comes in three different versions: 3000, 6000 and 9000 models to accommodate for different accuracy requirements and budgets.

The eMRU is also available in an inclinometer version of the eMRU that does not include Heave/Surge/Sway outputs.
picture of our eMRU
icon representing high accuracy

High Accuracy

High accuracy roll, pitch and heave, even in irregular sea states.
picture of RJ45 port

Power over Ethernet

RJ45 connector with Passive Power over Ethernet (PoE) makes installation easy and cabling costs low.
icon of very compact MRU

Very Compact

Low weight and small footprint enable installation almost anywhere.
picture of our configurator software

Our custom software solution

Experience enhanced efficiency and performance with MRU Insight. Analyze, visualize, and integrate your motion data effortlessly, gaining valuable insights. From real-time monitoring to comprehensive reporting, MRU Insights revolutionizes MRU data utilization 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.
eMRU Specification
Roll & Pitch0.05° (3000 series) - 0.02° (6000 series) - 0.01° (9000 series) - RMS (dynamic)
Heave (real time)5.0 cm or 5.0 % - Whichever is greater for 0 to 25 s periods, valid for irregular motions in real sea conditions.
PortsEthernet with Passive PoE
CommunicationTCP, UDP, Modbus TCP, ethernet/IP
ProtocolsNMEA, ASCII, Binary TSS1, MDL, Atlas, Simrad EM 3000, NORSUB, Custom, etc. ++. See protocol list.
Output frequency0-100 Hz
Depth ratingIP20
Dimensions120 x 57 x 53 mm
Weight0.55 kg
Casing materialAlumnium

Contact us

For any inquiries or assistance, please feel free to contact us. Our dedicated team is ready to provide prompt and helpful support. You can reach us through the provided contact form, email, or phone number.

We look forward to hearing from you!
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