Key Capabilities
RockFLEET Assured combines independent positioning, onboard awareness and shore-side reporting in a single maritime A-PNT system.
Independent A-PNT via Iridium PNT
Compares GNSS-derived position with an independently derived Iridium PNT position to help identify drift, spoofing, jamming and loss of trust.
Bridge situational awareness
Displays assured position alongside GNSS position and track, giving bridge teams a practical way to spot divergence and respond during disruption.
Shore-side
fleet visibility
Delivers position, integrity and event data into Cloudloop Tracking or customer systems for monitoring, alerts, review and escalation.
Designed for vessel deployment
A compact above-deck terminal supports remote configuration, Bluetooth commissioning, flexible reporting and optional bridge integration.
Chartplotter View for Bridge Crews
Onboard, RockFLEET Assured can show assured position alongside GNSS position and track, giving bridge teams a clear way to identify divergence during suspected jamming or spoofing.
Integrity status, alerts and event information can be displayed locally, helping crew understand when GNSS data can no longer be treated as reliable.
Cloudloop for Fleet Managers
Ashore, Cloudloop Tracking gives fleet teams a centralized view of vessel position, route history and integrity events across one vessel or a wider fleet.
Live tracking, geofence alerts and historical track review help teams monitor disruption as it happens, investigate incidents afterwards and support operational reporting.
How it Works
RockFLEET Assured continuously compares conventional GNSS-derived position data with an independently derived position based on Iridium PNT.
When the two sources remain aligned, position reporting continues as normal. When they diverge, the system can generate integrity warnings, alerts and event records for bridge crews and shore-side teams.
Why Iridium PNT Matters
RockFLEET Assured is powered by Iridium PNT, an alternative positioning, navigation and timing source delivered over the Iridium satellite constellation. Iridium PNT uses powerful LEO satellite signals and authentication techniques to provide a trusted position source when GNSS data is degraded, denied or unreliable.
Stronger signal
Independent of GNSS
Authenticated position source
Private position reporting
- Trusted position comparison: Compare GNSS against an independent Iridium PNT-derived position source.
- Designed for maritime use: Marine-grade above-deck terminal, suitable for deck or pole mounting.
- Bridge and shore workflows: Support onboard awareness, fleet monitoring and post-event review from the same system.
- Flexible data delivery: Use Cloudloop Tracking or deliver structured data into customer systems.
- Remote configuration: Manage reporting profiles, device settings and geofences without repeated vessel visits.
- Straightforward deployment: Designed to fit alongside existing vessel systems, with optional chartplotter and Power Hub configurations.
- Event records for review: Maintain logs of position integrity events to support operational reporting and investigations.
- Configurable reporting: Set reporting intervals and event-based alerts according to operational need.
Physical & Environmental
- Mounting: low profile antenna (deck or pole mounted)
- Cable: marine-grade, up to 100 m
- Dimensions: 201 mm diameter, 125 mm height
- Weight: 1,460 g (antenna + mounting bracket)
- Environmental: IP67; operating -40°C to +70°C
User Interface & Device Management
- Bluetooth LE mobile app: configuration, commissioning, status reporting (including position and message/connection state)
- Local alerts: status/fault reporting via the app (optional remote notifications to shore systems)
Communications
- Satellite transport: Iridium Messaging Transport (IMT)
- IMT packet size: 25 to 100,000 bytes
- Assured positioning: integrated Iridium PNT module
Electrical Power
- DC input: 10 V to 30 V DC (Cable 0-20 m) | 20 V to 30 V DC (Cable 21-100 m)
- AC input (optional): 220 V AC via external power supply
- Backup battery: internal battery option (autonomy depends on reporting profile)
Bridge and vessel system integration can be supported through NMEA 2000, NMEA 0183, and RS-422, depending on the selected system build and Power Hub configuration. This allows RockFLEET Assured to be installed alongside existing marine electronics without requiring wholesale replacement of onboard navigation infrastructure.
RockFLEET Assured FAQs
The system uses GNSS whenever the signal is valid and continuously cross-checks the data with Iridium PNT. It detects anomalies such as spoofing or jamming, flags events, and alerts users when issues occur. Even during disruptions, the system continues reporting trusted position data via A-PNT.
Yes. RockFLEET Assured can be configured as an input to an ECDIS or other onboard system, with interface type chosen before shipping. Units supplied with the optional Raymarine Axiom 9 chartplotter use NMEA 2000, while units intended for integration into a customer’s own system use NMEA 0183 over RS422.
RockFLEET Assured is not an IMO-approved primary navigation source, so it is intended for use as a backup, comparison, alerting, or other non-primary input.
RockFLEET Assured offers an optional Raymarine Axiom 9 chartplotter in two formats: a rugged case version for a complete out-of-the-box setup, or a lower cost version without the case using a wiring harness.
If no chartplotter is purchased, the system can still integrate with existing onboard equipment. Depending on the selected build, RockFLEET Assured can output A-PNT and GNSS position data via NMEA 2000 or NMEA 0183 over RS422. Configuration is handled through the Bluetooth app, which also provides a visual map of both GNSS and A-PNT positions.
For more complete bridge integrations, the Power Hub provides a below-deck junction point for power, protection, and NMEA connectivity.
When GNSS/GPS signals are unavailable, vessels can effectively become “blind” from a positioning perspective, with little or no reliable location accuracy available. In these scenarios, A-PNT provides a highly valuable independent positioning capability, typically delivering 25-100 meter accuracy.
While this may not match the precision of GNSS, it represents a dramatic improvement over having no positioning information at all, enabling continued navigation, operational awareness, and resilience in GNSS-denied environments. Performance is generally even better at higher latitudes due to the geometry of the Iridium satellite constellation.
Talk to us
Whether you need assured positioning for operations in GNSS-challenged regions, a bridge ready chart view for crews, or a simple way to stream trusted location and events into your own platform, RockFLEET Assured is designed to fit.
Get in touch to arrange a demo and share your requirements either by completing the form, or emailing hello@groundcontrol.com. We’ll respond to your inquiry within one working day.