Survey

Kongsberg cNODE Maxi - Transponder

The cNODE® Maxi is a modular acoustic transponder designed for versatile subsea operations. With multiple transducers, internal and external sensors, and various housing materials, it adapts to a wide range of offshore applications. Updates and new configurations are easily managed via the TTC30 unit, eliminating the need to open the device. A floating collar and release design ensures safe launch and recovery, while modular spare parts simplify maintenance and reduce downtime. Ideal for offshore survey, ROV/AUV tracking, subsea positioning, and long-term monitoring, the cNODE Maxi delivers reliability, flexibility, and efficiency in demanding underwater environments.

General

  • Type: Modular acoustic transponder
  • Model: cNODE® Maxi
  • Applications: Survey, positioning, ROV/AUV tracking, monitoring


Design

  • Modular construction for easy customization
  • Multiple housing materials available
  • Compatible with various internal & external sensors
  • Floating collar and release system for safe launch/recovery


Configuration & Software

  • User-friendly updates via TTC30 unit
  • No need to open the transponder for reconfiguration
  • Supports downloadable software and add-on functions


Maintenance

  • Modular spare parts
  • Easy serviceability, reduced downtime


Operational Advantages

  • Flexible deployment across subsea operations
  • Reliable in demanding offshore environments
  • Future-proof with upgradeable design


  • Operates together with HiPAP®, µPAP and cPAP®
  • transceivers
  • Compatible with Cymbal® acoustic protocol for
  • positioning and data link
  • SSBL positioning
  • LBL positioning
  • Range measurement between transponders (typical, 1 σ
  • standard deviation):

— Range accuracy: 0.02 m

— Repeatability: 0.01 m

  • Acoustic data link for command and data transfer
  • Internal tilt sensor ± 90°; accuracy ± 2°
  • External connector for transponder configuration and software
  • update via serial line (TTC30)
  • Modular design such that the transducer, transponder
  • electronics, battery pack and optional add-ons can be
  • replaced individually


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