Survey

Sonardyne Ranger 2 USBL: Underwater Positioning

Precise Tracking, Dynamic Positioning, and Subsea Telemetry in One System

Product Overview The Sonardyne Ranger 2 is a high-performance Acoustic Positioning system designed for a wide range of subsea operations. Utilizing Ultra-Short Baseline (USBL) technology, it allows operators to track underwater targets—such as ROVs, AUVs, and divers—and provide precise position reference for Dynamic Positioning (DP) vessels.

Built on Sonardyne’s 6G® (Sixth Generation) hardware platform and Wideband® 2 digital signal technology, the Ranger 2 excels in challenging acoustic environments. Whether you are working in shallow water for a wind farm survey or at full-ocean depth for scientific research, the Ranger 2 delivers unmatched precision, update rates, and reliability.

Why Choose the Sonardyne Ranger 2?

  • Exceptional Accuracy: Achieve positioning precision of better than 0.1% of slant range when paired with optimized sensors.
  • Multi-Target Tracking: Simultaneously track up to 10 underwater targets (transponders) at ranges exceeding 6,000 meters.
  • 6G Digital Performance: Highly robust against acoustic noise and multi-path interference, ensuring stable tracking even under a thrusting DP vessel.
  • Integrated Telemetry: Not just a tracking tool—the Ranger 2 serves as a high-speed data link to command and retrieve status updates from subsea assets.

  • The most powerful USBL system on the market
  • Incorporates 30 years of USBL innovation and know-how
  • Recommended for installation on large vessels and USVs
  • Global vessel track record; offshore, research, cable-lay, salvage and naval
  • Shares common platform with other Sonardyne USBLs
  • Up to 0.04% of slant range system accuracy
  • Up to 99 targets tracked, simultaneously
  • Up to 11,000 m tracking range (LMF)
  • 1 Hz position update rate
  • Support all industry standard DP telegrams
  • Supports acoustically-aided INS
  • MF frequency (19-34 kHz) or LMF (14-19.5 kHz)
  • Sonardyne Wideband 2 digital acoustics for reliable performance in both shallow and deep environments
  • Supports Sonardyne Messaging Service for data exchange up to 9,000 bps
  • Compatible with a wide range of 6G transponders


  • Wideband® 2 Signal Processing: Offers faster position updates and more robust tracking compared to traditional analog systems.
  • Unified Software Interface: The intuitive Ranger 2 software provides real-time 3D visualization, diagnostic tools, and seamless integration with vessel navigation.
  • Scalable Hardware: Available in several versions (Pro, Standard, and Survey) to suit everything from simple inshore tracking to complex deep-water construction.
  • DP Integration: Fully compatible with major Dynamic Positioning systems, providing a reliable acoustic reference for vessel station-keeping.
  • In-Built Health Monitoring: Constant monitoring of acoustic noise levels and signal quality ensures you always know the "certainty" of your position data.
  • 1768278726_Sonardyne_8142_HPT.pdf

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