Cutting-Edge Positioning, Navigation & Motion Tracking Systems for Marine & Maritime Vessels & Platforms
MRU-B1.1 Basic three-axis marine motion sensor outputting pitch & roll

Basic three-axis marine motion sensor outputting pitch & roll

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The MRU-B1.1 is a basic motion reference unit that combines three-axis solid state accelerometers, gyroscopes and barometric sensors and delivers pitch and roll outputs for marine and maritime applications. With low noise and high accuracy, the sensor provides reliable real-time measurement under challenging surface or subsea conditions, and is ideal for a variety of use cases including bathymetric and hydrographic survey, platform stabilization, and unmanned underwater vehicles.

The unit incorporates a range of algorithms for specific platforms including surface vessels, ROVs and AUVs, buoys, cranes, helidecks and more. Data can be output in standard industry formats including Kongsberg/Seatex, Teledyne and SMC. The MRU-B1 is available in an IP67-rated housing or a special rugged subsea enclosure rated to depths of 1000 metres.


Dimensions 120 x 50 x 53 mm
245 x 140 x 115 mm (subsea)
Weight 220 g
6.57 kg (subsea)
Power 1W (2W w/ datalogger)
Pitch & Roll Accuracy 0.02 deg RMS dynamic
Resolution 0.005 deg
Measurement Range ±90, ±180 deg