
Hydrography
Accurate measurements of roll, pitch, and heave are crucial for achieving optimal results when compensating multibeam echosounders for vessel motion.
Hydrography
Related questions
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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.
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A gyrocompass determines true north using gyroscopes and Earth's rotation, not magnetism. It’s essential for heading accuracy in marine and aerial navigation, though performance may vary at extreme latitudes.
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Passive PoE powers the MRU Compact via standard Ethernet cable without negotiation. It’s not compatible with most PoE switches (which use Active PoE), so a splitter or converter is typically required.
Further reading

Advanced motion compensation for sonars introduced at Ocean Business 2025
MRU SubseaMRU Marine
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Research Project to Test Value of MRU Data for Vessel Performance and Carbon Reduction
MRUs for ShippingMarine operationsMRU Marine
Read article

Reference frames and notations for Norwegian Subsea MRUs
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