Cellula Robotics has selected Sonardyne navigation and positioning technology for multiple long-range autonomous underwater vehicle programmes, aiming to strengthen accuracy and mission certainty for detect, inspect and protect operations. The company has ordered multiple SPRINT-Nav X inertial navigation systems and selected AvTrak 6 for tracking, communications and mission control, alongside Ranger 2 ultra-short baseline positioning and communications systems for both end users and Cellula’s own testing and demonstrations.

 

Why Certainty Is the Core Requirement

 

Cellula frames the procurement around a simple operational need, long endurance autonomy only delivers value if operators can reliably track where the vehicle is and manage it throughout the mission. With long-range deployments, drift, communications gaps and uncertain positioning can reduce confidence in collected data and complicate decision-making, particularly in security or infrastructure monitoring work where the outcome depends on knowing exactly where the asset was when it detected or inspected something.

 

How the Sonardyne Stack Fits the Mission Profile

 

SPRINT-Nav X is positioned as the highest grade option in Sonardyne’s underwater navigation line and is intended to support precise navigation when external references are limited. AvTrak 6 adds a layer for tracking and mission control, while the inclusion of multiple Ranger 2 USBL systems expands positioning and communication capability for operators supporting deployments from vessels. The combination suggests an approach that treats navigation, tracking, and comms as a unified mission system rather than separate components.

 

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Cellula’s Fleet Emphasises Long Endurance and Range

 

Cellula’s AUV range includes the nearly 12 metre Guardian and Porter platforms powered by hydrogen fuel cells, intended for long-range surveillance and cargo delivery respectively. The company states these vehicles are designed for up to 45 days endurance and around 5,000 kilometres of range, with large payload bays that allow flexible configuration depending on mission requirements. Cellula also highlights its 8.5 metre Envoy AUV, also hydrogen fuel cell powered, designed for surveillance and data gathering and able to anchor on the seabed for periods, a use case that makes robust positioning and reacquisition especially important.

 

Ranger 2 Gyro USBL as the Deployment Enabler

 

The package includes Ranger 2 systems in a gyro USBL configuration that combines heading, pitch, roll and an acoustic transceiver into a single pre-calibrated unit. This design is intended to simplify vessel deployment and improve accuracy, reducing setup complexity for end users and making positioning performance more repeatable across different support vessels and operational contexts.

 

What This Signals for Long Range Subsea Operations

 

The selection reflects a broader shift toward longer endurance subsea autonomy where navigation, positioning and communications are not optional add-ons but defining capability enablers. As AUV missions stretch from hours to weeks, and from local surveys to wide-area monitoring, confidence in track accuracy and comms resilience becomes a primary constraint. Cellula’s choice of Sonardyne’s higher-grade systems signals that the long-range AUV market is increasingly prioritising assured performance and repeatability over minimum viable navigation packages.