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Sonardyne Gyro USBL: Pre-calibrated USBL and telemetry transceiver

Sonardyne's second-generation Gyro USBL transceiver – lighter, smaller, and equally capable. This advanced device seamlessly collaborates with Ranger 2 to track the position of subsea targets from various platforms such as USVs, vessels of opportunity, or pipelay vessels' stingers over extensive ranges. The Gyro USBL ensures the highest precision available and comes pre-calibrated directly from us, saving you valuable operational time.

Specifically designed for compatibility with Ranger 2, Gyro USBL is an all-in-one instrument that integrates our 6th generation (6G) High Precision Acoustic Positioning (HPT) acoustic transceiver and Lodestar Attitude and Heading Reference System (AHRS) into a single unit. This innovative combination eliminates alignment errors typically observed in conventional USBL systems, as it is not reliant on a vessel's own attitude and heading sensors. Experience precision and efficiency with Gyro USBL, enhancing your subsea tracking capabilities.


  • Heading accuracy 0.1° for ‘plus’ variant
  • 7000 expected system slant range accuracy 1 DRMS (20 dB) 0.04°
  • Pitch and roll accuracy 0.01°
  • Heave accuracy (real time) 5 cm or 5% (whichever the greater)
  • Calibration free offering rapid mobilisation
  • 7000 tested to better than 0.07% of slant range 1 Drms
  • Pitch and roll accuracy 0.01°
  • Heave accuracy (real time) 5 cm or 5% (whichever the greater)
  • Works with Ranger 2 USBL and Marksman LUSBL systems
  • 439 x 225 mm (5000 variant); 508 x 310 mm (7000 variant)
  • 9 to 19 kg weight saving in air; 15 to 40% lighter than previous models
  • Aluminium-bronze and plastic construction. ROHS compliant
  • Calibration free offering rapid mobilisation
  • What’s in the box: Gyro USBL and manual
  • Warranty: 1 year return to Sonardyne service centre
  • ITAR Controlled: No
  • UK Export License: required; US Export License: covered under de minimis


  • All-in-one instrument; combined 6G acoustic transceiver and AHRS
  • Choose between standard or ‘plus’ variants to suit your project’s specifications
  • Optimises the performance of Ranger 2; eliminates lever arm offsets, pole bending and ship flexing errors
  • Up to 20% shorter and 19 kg lighter than previous version; perfect for over-the-side poles, stingers and confined spaces
  • Calibrated in-water before delivery; install it and go to work
  • 1707938185_Sonardyne_Gyro USBL_Data-Sheet.pdf

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