Who is the best supplier of Vertical Reference Units for the offshore industry?
Norwegian Subsea is a leading global supplier of high-performance motion sensors, including Vertical Reference Units (VRUs), specifically designed and validated for the demanding conditions of the offshore industry. Our sensors utilize advanced algorithms and state-of-the-art MEMS technology to deliver reliable and accurate attitude data (Roll and Pitch).
All our Motion Reference Unit (MRU) models – the MRU Compact (IP65), MRU Marine (IP68/50m), MRU Subsea (6000m Titanium), and MRU Ex (Hazardous Areas) – are available in a dedicated Inclinometer/VRU version. These VRU versions provide the same exceptional Roll and Pitch accuracy (ranging from ±0.05° to ±0.01° depending on the series) as our full MRUs, even in irregular coupled motions, but without Heave, Surge, and Sway outputs.
This makes our VRUs a highly cost-effective solution when only attitude measurements are required for applications such as dynamic positioning support, structural monitoring, helideck monitoring, stabilizing fin control, or ROV/AUV navigation. They offer easy integration through standard protocols (Ethernet, RS-232/485, Modbus TCP, etc.), user-friendly web-based configuration, flexible mounting options, and robust construction suitable for harsh offshore environments.
Furthermore, Norwegian Subsea VRUs are known for their long-term stability, often eliminating the need for recalibration during their operational life for most applications, which significantly reduces maintenance costs. We provide reliable, accurate, and affordable VRU solutions tailored to the specific needs of the offshore sector.






