Maintaining Confidence in Vessel Position in GNSS-Compromised Environments

Ambrey is a global leader in maritime security, intelligence and risk management, supporting more than 24,000 vessels operating across over 34 of the world’s most complex and high risk maritime regions.

As GNSS jamming and spoofing become an increasingly common feature of commercial shipping, maintaining confidence in vessel position has become an important part of safe and efficient operations. Trusted situational awareness supports navigation, operational decision-making, regulatory compliance and the protection of crews and assets.

To enhance the services available to customers operating in these challenging environments, Ambrey has partnered with Ground Control to incorporate RockFLEET Assured into its wider maritime security offering.

 

The Challenge

Across key shipping routes including the Baltic, Black Sea, Red Sea and Strait of Hormuz, deliberate GNSS interference is becoming an increasingly common operational challenge.

When GNSS signals are disrupted or manipulated, the effects can extend well beyond navigation. Bridge teams may receive conflicting information from connected systems, making it more difficult to assess vessel position and maintain confidence in the information available to them. This can increase operational workload and complicate decision-making in already demanding environments.

Ambrey was hearing these concerns from customers operating in higher risk regions and recognized the value of an independent positioning reference that could help validate vessel position whenever GNSS integrity is uncertain.

“Our customers consistently highlight the challenges of operating in GPS-denied environments as a major safety concern. We are delighted to be working with Ground Control as a world leader in this space, bringing assured tracking and navigation to our clients.”
Ben Westcott, Director of Digital Services at Ambrey

The Solution

RockFLEET Assured is Ground Control’s maritime Assured Positioning, Navigation and Timing (A-PNT) solution, developed to help vessel operators maintain confidence in position data when conventional GNSS is affected by jamming or spoofing.

Built around Iridium’s secure, independent PNT service, RockFLEET Assured provides an assured positioning reference alongside existing navigation systems. By continuously comparing GNSS-derived position with Iridium PNT, bridge teams and shore operators can identify discrepancies, recognize potential interference and make more informed operational decisions.

Ambrey has chosen to incorporate RockFLEET Assured into its maritime security, intelligence and risk management services, combining assured positioning with the operational support provided by its 24/7 Global Operations Centre.

 

How It Works

RockFLEET Assured continuously compares conventional GNSS with Iridium PNT, providing bridge teams and shore operators with an independent reference for validating vessel position. This allows discrepancies to be identified quickly, supports the detection of potential jamming or spoofing events, and helps crews maintain operational confidence in GNSS-compromised environments.

Triton Case RockFLEET Assured

Positioning events can also be recorded and shared ashore, supporting incident investigation, operational reporting and discussions with insurers where appropriate.

Designed specifically for commercial maritime deployment, RockFLEET Assured is supplied as a compact above-deck terminal with flexible mounting options suitable for a wide range of vessel classes and superstructure configurations. Its rugged IP66-rated enclosure is engineered for harsh marine environments, while the standard installation requires no below-deck equipment, helping minimize installation time and operational disruption.

Combined with Ambrey’s Global Operations Centre, customers benefit from assured positioning alongside the intelligence and operational expertise needed to interpret navigation anomalies within the wider context of maritime risk.

“GNSS disruption is no longer a niche concern. It’s becoming an operational reality for commercial fleets operating in many parts of the world. We’re excited to be working with Ambrey to make RockFLEET Assured available as part of its wider maritime services, combining their operational expertise with our assured positioning capability. Together we’re helping ship and shore teams validate vessel position, identify anomalies and maintain confidence when GNSS integrity is in doubt.”

Alastair MacLeod, CEO of Ground Control

The Outcome

By bringing together Ground Control’s assured positioning technology and Ambrey’s maritime operational expertise, commercial operators gain greater resilience when operating in regions affected by GNSS disruption.

RockFLEET Assured provides an independent positioning reference alongside conventional GNSS, enabling operators to validate vessel position, recognize anomalies more quickly and maintain confidence in the information available to bridge and shore teams.

The result is improved situational awareness, better-informed operational decision-making and greater resilience for vessels operating in increasingly contested navigation environments.

Strengthen Your Navigation Resilience

Learn how RockFLEET Assured can help your organization maintain confidence in vessel position when GNSS signals are disrupted.

Complete the form or email hello@groundcontrol.com to speak with one of our specialists or arrange a demonstration.

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