Seabed inertial measurement units

The SGR family


From standalone metre-level to AdVance® RTK centimetre-level positioning, the SGR6 is flexible to meet your positioning needs. With 240 channels and comprehensive support for all current and planned GNSS signals, the SGR is field upgradeable to eliminate the need for future hardware changes.

Enhanced Connectivity
The SGR6 provides numerous interfaces including multiple RS-232/RS-422 serial ports, USB host. Most interfaces are provided via standard connectors, eliminating the need for hard-to-find and expensive custom cables. The SGR6 also boasts Ethernet support with an advanced WebUI for remote configuration and access of data logs.

Benefits / Features

  • Future-proofed with current and upcoming GNSS signal
  • Rugged IP67 housing for reliable use in harsh environments
  • Multiple communication interfaces for ease of integration
  • Advanced Web UI for remote configuration and access
  • Scalable positioning options from metre to centimetre-level
  • Optional 4GB of on-board memory for data logging

SPAN Capable
SPAN (Synchronous Position, Attitude and Navigation) technology brings together two different, but complementary technologies: GNSS positioning and inertial navigation. The SGR6 supports IMUs from a variety of suppliers to provide a tightly coupled 3D navigation solution that is stable and continuously available, even through periods when satellite signals are blocked. Integrated ALIGN heading functionality
further enhances the powerful SPAN capabilities of the SGR6.
Seabed inertial
measurement units

Seabed IMU-S
The Seabed-IMU-S family are submersible inertial
measurement unit’s. An inertial measurement unit, or IMU, is an electronic device that measures and reports a vessel/vehicle’s velocity, orientation, and gravitational forces,
using a combination of accelerometers and gyroscopes, sometimes also magnetometers.
When integrated with SPAN technology, the SBD-IMU-S family is ideal for maritime, airborne and ground applications that require accurate 3D position, velocity and attitude (roll, pitch and azimuth) data.
The SBD-IMU-S family has been designed to function at a maximum water depth of 30 meters. This makes it perfect for underwater operations.


  • Tactical grade IMU performance
  • Commercially exportable IMU;
  • Ideal for size constrained applications;
  • Continuous, stable positioning;

The SBD-IMU-S1 is a MEMS based IMU integrated with SPAN technology to
deliver 3D position, velocity and attitude. The SBD-IMU-S1 features low noise
gyros and accelerometers in a small, lightweight, waterproof enclosure. The IMU
is factory calibrated and compensated over its temperature operating range.
The SBD-IMU-S1 enables precision measurements for applications that require
low cost, high performance and rugged durability in a very small form factor.
Dimension: 140×110.47×71
Weight: 1.02 kg

The SBD-IMU-S2 is designed to perform with extreme stability in the most
demanding environments, including thermal ambient conditions, with
outstanding shock and vibration performance, the high reliability of the fiber
optic gyro, or FOG technology is a core feature that assures sustained IMU
operation and mission success.
Dimension: 140x116x104
Weight: 1.2 kg

The SBD-IMU-S3 is a near navigation grade sensor it contains fiber optic gyros
and fully temperature compensated Micro Electromechanically Systems (MEMS)
accelerometers. The low noise and stable biases of the accelerometer and gyro
sensors mean the SBD-IMU-S3 is well suited for marine, ground or airborne
survey applications. The SBD-IMU-S3 offers extremely high performance and
precise accuracy at an affordable price point, it is a commercially exportable
IMU that offers the highest level of performance in our IMU portfolio.
Dimension: 212x185x170
Weight: 7kg

Download Brochure: Seabed leaflet SGR IMU Family

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