ACC Marine | Norwegian Subsea

The ACC MARINE is a robust and waterproof Ultra-low-noise Accelerometer designed specifically for marine applications with flexible communication options.

ACC Marine

Product overview

Featuring state-of-the-art MEMS technology 3-axis accelerometers, the ACC is high performance, ultra-low noise, and affordable. Exceptional low noise density, velocity
random walk (VRW) and bias instability make this accelerometer ideal for demanding vibration monitoring applications.

The ACC Marine can be mounted in a dry area or on a floating substructure in up to 50 m water depth (ACC Marine SW), offering a cost-effective solution for demanding vibration monitoring applications.

Developed for monitoring floating offshore wind platforms, offshore structures, and subsea templates, or any installation with demanding vibration monitoring
requirements. The accelerometer supports real-time integrity monitoring, serves as input to digital twin models, and enables fatigue life analysis.

Download content brochure

picture of our MRU Marine with degrees of freedom illustrated

High Accuracy

Exceptional low noise density, velocity random walk (VRW) and bias instability.

Easy interface

Ethernet, serial ports and free software upgrades. Wide range of industry standard protocols. Custom NMEA and Binary protocol generator included in configuration software.

Robust and Waterproof

Robust and compact waterproof aluminum housing. The MRU Marine SW can even be used outdoors in the splash zone or in up to 50 m water depth.

Easy to use

All Norwegian Subsea Motion Reference Units (MRUs) can be easily configured using the MRU Configurator (free of charge).

Simply define the communication ports and protocols as well as the MRU mounting orientation and location, and you are ready to go.

The MRU Configurator is also a great tool to monitor the outputs in real-time, plot the variables, check the on-board diagnostics and update the MRU firmware.

Read more about the MRU Configurator

Related articles and case studies

Advanced motion compensation for sonars introduced at Ocean Business 2025

Norwegian Subsea is bringing its acclaimed Motion Reference Unit (MRU) technology to sonar-based applications with the introduction of an updated MRU lineup featuring full aiding capabilities at Ocean Business 2025 this week.

Read article

ShoreConnection International

ShoreConnection ensures safe landing for thousands of helicopters with Norwegian Subsea Motion Reference Units

Helideck Motion Monitoring & Weather Data Systems (HMS) provide real-time motion and environmental data essential for flight planning and for pilots to remain in safe control during take off and landing from moving helidecks. The HMS depends on Motion Reference Units (MRU) installed directly on to the support structure that continuously measure the helideck’s movement. Leading HMS manufacturer ShoreConnection chooses MRUs built by Norwegian Subsea.

Read case study

WASSP Boosts Multibeam Accuracy for Marine Survey and Fish Finding with Norwegian Subsea Motion Reference Units

Norwegian Subsea’s Motion Reference Units (MRUs) are now available integrated with WASSP’s multibeam sonar systems, offering enhanced motion data accuracy and performance for offshore applications.

Read article

All articles All case studies