Ekinox2-M Subsea Motion Reference Unit

SBG Ekinox2-M: Subsea Motion Reference Unit

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The Ekinox2-M Subsea Motion Reference Unit (MRU) has been designed specifically for subsea applications of up to 6,000 m depth.



The Ekinox2-M Subsea MRU from SBG Systems is suitable for use up to 6,000 m and provides outstanding performance. The MRU utilizes the most up-to-date MEMS sensors and offers a high accuracy, robust solution. The cost-effective, compact package makes it ideal for Autonomous Underwater Vehicle and Remotely Operated Vehicle orientation.

Irrespective of weather conditions or sea state, the Ekinox2-M’s robust enclosure together with its delayed heave and accurate attitude capabilities, makes offshore and hydrographic operations a breeze. The unit can also be connected to a Dual Antenna GPS for accurate heading data. Ekinox sensors are compatible with all hydrographic software (Hypack, QPS, Teledyne PDS, etc.).

As it has no mounting orientation limitations, the Ekinox2-M can be fixed under a boat, or on its surface if it needs to be mounted permanently.


  • Designed for subsea applications of up to 6,000 m depth.
  • Long life Titanium enclosure.
  • Roll, pitch, heading and heave measurements.
  • Maintenance free solid state sensors.

Technical Specifications

3D Orientation
Heading:0.05° RMSExternal Dual Antenna GNSS (<4 m baseline)
Roll, Pitch:0.02° RMSRTK GNSS aided
Delayed:2.5 cm or 2.5%Whichever is greater, velocity aided
Real-time:5 cm or 5%Whichever is greater, velocity aided
Wave period0 to 20 sAuto-adjusting
Position (With Split-box)
Single Point L1/L2/L5:1.2 m
DGPS:0.4 m
SBAS:0.6 m
RTK (option):1 cm + 1 ppm
RTK 30s Outage:3 mMarine conditions
RTK 60s Outage:0.2% TDMarine conditions, DVL* aided
PPK**:0.02 m
Physical Characteristics
SpecificationsTitanium 200 (EL)Titanium 6,000 (ED)
Depth Rating:200 m6,000 m
Weight in water:0.86 kg (1.9 lbs)1.43 kg (3.2 lbs)
Weight in air:1.55 kg (3.4 lbs)2.34 kg (5.2 lbs)
Height:13.8 cm (5.4 inches)15.5 cm (6.1 inches)
Diameter:8.7 cm (3.4 inches)9.2 cm (3.6 inches)
Supply Voltage:9 to 36 VDC
Power Consumption:< 3 W


The Ekinox2-M Subsea MRU from SBG Systems is available through Canal Geomatics. If you would like more information about this product, please feel free to get in touch with us by completing the Request Pricing form.