Skip to main content

Communication Using Underwater Ultrasonic Wireless (CUUUWi)

Product Specifications

CUUUWi is a communications gateway which enables voice and textbased data communication between above water mobile phone and SATCOM users to underwater users or platforms. It enables underwater vehicles and autonomous sensors to connect and communicate with above water satellite and mobile telecommunications network without surfacing.

The system can be used for two key roles:

  • Submarine detection and emergency communications - CUUUWi can be fitted to a fleet of USVs and set on a search pattern, scanning the oceans to detect the emergency pulses of a lost submarine and establishing a communications link between submarines at depth and their command HQ to improve search and recovery operations.
  • Secure communication at speed and depth - CUUUWi can provide encrypted secure communications for a submarine to communicate with the outside world when in stealth mode, by acting as a low signature surface based communications gateway, enabling voice and text-based data communication between above water mobile phone and SATCOM to underwater users or platforms, operating within a range of 10km of the gateway (environment dependent).

The systems extend the potential for through water communications for a range of subsea platforms including Autonomous Underwater Vehicles (AUVs), seabed sensors, submarines, ships, and divers.

The modem uses third generation MASQ (Multichannel Acoustic Signalling Quality of Service) multichannel Direct Sequence Spread Spectrum (DSSS) technology for high reliability communications, robust against multipath inter symbol interference.

Equipment such as the Liquid Robotics Wave Glider provide a pervasive, remotely navigated gateway platform to deploy the CUUUWi system.

  • Communications at speed and depth
  • No local storage of data
  • Persistent 
  • Remote controlled
  • Long life
  • Encryption
  • Scuttling
  • Other acoustic modems
  • High speed modems (induction/light)
  • Air deployment

Resources

  • CUUUWi Data Sheet teaser

    CUUUWi Data Sheet

Related News

Ship in dock

Editorial | 09. 22. 2026

Strengthening Australia's Maritime Capability: L3Harris at the Forefront

The relationship between L3Harris and Australia is built on trust, shared values and a common interest in a stable, secure and prosperous Indo-Pacific, writes Nino DiCosmo, President, Maritime.

Ship in dock

Editorial | 09. 22. 2026

Strengthening Australia's Maritime Capability: L3Harris at the Forefront

Submarine slices through water surface under a blue sky

Press release | 09. 21. 2026

US Navy Awards L3Harris Imaging Contract to Strengthen Undersea Superiority

Virginia-class sub at sea

Editorial | 05. 05. 2026

L3Harris Provides Key Technologies for Newly Commissioned Navy Submarines

submarine surfacing

Editorial | 04. 16. 2026

Maintaining America's Undersea Edge: L3Harris Secures Towed Array Production Through 2029

US Navy submarine

Press release | 02. 18. 2026

L3Harris Secures Full-Rate Production Contract for US Navy Submarine Communication Systems

Related Domains & Industries

Solutions that solve our customers' toughest challenges.
view all capabilities