How do I purchase or contact Norwegian Subsea for sensor solutions?
Norwegian Subsea is a global supplier of high-performance Motion Reference Units (MRUs) and related motion sensor solutions. We work closely with customers to ensure each sensor is configured to meet specific application needs across marine, subsea, offshore, and industrial environments.
To initiate a purchase or consultation, we recommend starting with our “Request a quote” form available at the top right corner of our website. This allows us to collect relevant details about your requirements, including:
- Required accuracy level: Series 3000, 6000, or 9000 (Roll/Pitch accuracy from ±0.05° down to ±0.01°)
- Operational environment: MRU Compact, MRU Marine, MRU Subsea (6000m-rated), or MRU Ex (hazardous areas)
- Integration preferences: Ethernet (UDP, Modbus TCP, Ethernet/IP) or serial communication (RS-232/RS-485)
- Specific application requirements such as real-time motion data, VRU vs. MRU functionality, or housing material
Our expert team will assess your input and guide you in selecting the most suitable, cost-effective sensor, whether for a new installation or retrofitting existing systems. All our MRUs use advanced MEMS technology and sensor fusion algorithms, and most models are maintenance-free and do not require recalibration.
Contact Details:
- Email: sales@norwegian-subsea.no
- Phone: (+47) 406 35 200
We are headquartered in Oslo, Norway, and serve customers worldwide across marine, offshore, renewable energy, defence, and subsea industries.
Related products
Usage area
50 m depth, IP 68
Connectors
Lemo or SubConn 8 or SubConn 16
Roll & Pitch accuracy
- 3000±0.05°
- 6000±0.02°
- 9000±0.01°
Heave accuracy
5 cm or 5.0%
Usage area
IP 65
Connectors
RJ45 or RJ50
Roll & Pitch accuracy
- 3000±0.05°
- 6000±0.02°
- 9000±0.01°
Heave accuracy
5 cm or 5.0%
Usage area
6000 m depth
Connectors
SubConn 8
Roll & Pitch accuracy
- 3000±0.05°
- 6000±0.02°
- 9000±0.01°
Heave accuracy
5 cm or 5.0%
Usage area
Hazardous areas
Connectors
Pigtail cable
Roll & Pitch accuracy
- 3000±0.05°
- 6000±0.02°
- 9000±0.01°
Heave accuracy
5 cm or 5.0%
Further reading
MRUs for vessel performance optimisation in focus at Europort 2025
Research Project to Test Value of MRU Data for Vessel Performance and Carbon Reduction
Advanced motion compensation for sonars introduced at Ocean Business 2025
Related questions
- Read the full answer
The MRU Marine is IP-68 rated with Lemo connectors and LEDs. The Marine SW supports 50m depth, uses SubConn connectors, and comes in two versions differing by available output combinations.
- Read the full answer
Motion monitoring is a cornerstone of safety, operational efficiency, and asset protection in the offshore industry: whether on vessels, platforms, or subsea equipment.
- Read the full answer
A Vertical Reference Unit (VRU) is an advanced device that measures the attitude of an object, specifically its Roll and Pitch.
Related applications
Wave Radar
Accurate heave measurements play a vital role in compensating for Wave Radar measurements when installed on ships or other floating vessels.
Wind Turbines
Accurate and precise motion monitoring is crucial for wind turbine towers to ensure structural integrity and optimise performance.
Helideck Monitoring
Accurate measurement of roll, pitch, and heave motions is crucial for assessing the safety of helidecks during helicopter landing and take-off operations.
Ship Motion Monitoring
Precise motion measurements are essential for vessel digitalisation, supporting fuel optimisation, route planning, cargo safety and structural health.
Floating Wind Turbine Control
For floating offshore wind turbines, precise measurement of wind mast roll and pitch motion caused by waves is crucial.
Bridges
Accurate and high-resolution motion sensors are crucial for the structural monitoring of bridges.
Dynamic Positioning
Dynamic positioning (DP) of vessels necessitates roll and pitch compensation of the GNSS antenna to ensure accurate positioning of the ship's control point.
Floating Wind Base Motion Monitoring
Monitoring the movements and structural integrity of floating wind foundations, including both the base and turbine, along with the anchoring system, is crucial.
Buildings
Accurate and high-resolution motion sensors are essential for the structural monitoring of tall buildings.
Subsea Surveys
Subsea surveys often demand precise tilt measurements (roll and pitch) for various purposes, such as installation tasks or continuous monitoring of tilt changes and deflections in subsea structures.
Motion Compensated Gangways
Accurate measurements of all 6 degrees of freedom are essential for the automatic motion control of gangways.
Offshore Fish Farms
Offshore fish farming presents unique challenges, requiring continuous remote monitoring of all onboard systems, including roll, pitch, and heave motions.
Riser Monitoring
The NORSUB Subsea MRU is specifically designed to provide highly accurate measurements of roll, pitch (inclination), and lateral motions in risers.
Active Heave Compensation
Accurate measurement of vertical motion at the crane tip or winch is crucial for the operation of Active Heave Compensated (AHC) cranes and winches.
Stabilising Fins
Stabilising fin and roll damping systems rely on motion sensors to accurately measure the roll motions of a ship.
Wind Lidar Buoys
Metocean buoys, lidar buoys, and other instrument/sensor carrying buoys, need reliable motion measurements to motion compensate pay load sensors, or to collect motion data for post processing.
BOP Monitoring
Accurate motion sensors play a crucial role in the structural monitoring of Blowout Preventers (BOPs), enabling the measurement of inclination and lateral displacements.
Hydrography New
Accurate measurements of roll, pitch, and heave are crucial for achieving optimal results when compensating multibeam echosounders for vessel motion.
Hydrography
Accurate measurements of roll, pitch, and heave are crucial for achieving optimal results when compensating multibeam echosounders for vessel motion.
ROV/AUV
Reliable motion sensors are vital components in the navigation system and motion compensation of payload sensors for ROVs and AUVs.
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