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Marine & Maritime

GNSS for Marine & Maritime

Centimeter-accurate RTK and IHO-compliant positioning for hydrographic survey, autonomous surface vessels, dredging operations, offshore energy, and port automation.

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<1 cm
RTK Accuracy
IHO
Order 1a/1b
NMEA
2000 & 0183
AIM+
Anti-Jamming
Overview

Reliable GNSS for Every Marine Application

Marine GNSS applications demand rugged hardware, multi-frequency RTK accuracy, and resilience to the RF interference common in busy ports and offshore environments. Eview GNSS receivers deliver all three — certified to IHO hydrographic survey standards and protected by Septentrio AIM+ anti-jamming technology.

From hydrographic survey vessels collecting IHO Order 1a bathymetric data to autonomous surface vessels navigating confined waterways, Eview receivers provide the centimeter accuracy and anti-spoofing protection required for safe, precise marine operations.

Marine vessel with RTK GNSS navigation system for hydrographic survey
Key Capabilities
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Centimeter RTK: meets IHO Order 1a/1b standards
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Multi-frequency L1/L2/L5 for maximum accuracy offshore
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NMEA 0183 & NMEA 2000 output for marine electronics
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AIM+ anti-jamming for port & coastal RF environments
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Dual-antenna heading for vessel orientation without gyro
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Anti-spoofing protection for secure offshore operations
Applications

Marine & Maritime Use Cases

Eview GNSS powers precision marine operations from inshore hydrographic surveys to offshore energy and autonomous vessel navigation.

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Hydrographic Survey
Multi-frequency RTK for IHO Order 1a/1b bathymetric surveys. GNSS heading and positioning integrated for vessel-mounted multibeam systems.
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Dredging Operations
Centimeter RTK for dredge head positioning, cut-level monitoring, and dredge track guidance. High-dynamics output for swing arm position updates.
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Autonomous Surface Vessels
RTK + dual-antenna heading for autonomous USVs navigating confined waterways, harbors, and offshore inspection corridors without human crew.
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Offshore Energy & Oil/Gas
Precise vessel positioning for ROV support, offshore supply vessels, and subsea survey operations. Anti-spoofing protection for high-value offshore assets.
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Port & Harbor Automation
Automated berth positioning, tugboat guidance, and container crane alignment. AIM+ anti-jamming for reliable operation in the RF-dense port environment.
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Environmental Monitoring
Survey-grade GNSS for oceanographic research vessels, sea-level monitoring networks, and coastal change detection programs requiring long-term accuracy.
FAQ

Marine GNSS — Frequently Asked Questions

What GNSS accuracy is required for IHO hydrographic survey?
IHO Order 1a (shallow water, high-value infrastructure) requires horizontal positioning accuracy of ±2 m at 95% confidence for total propagated uncertainty (TPU). For the GNSS component alone, this means RTK accuracy well under 1 m. IHO Order 1b relaxes this slightly. Eview RTK receivers deliver <1 cm accuracy — comfortably within any IHO standard.
What NMEA sentences do Eview marine receivers output?
Eview receivers output NMEA 0183 sentences including GGA, GLL, VTG, ZDA, RMC, GST, and HDT. NMEA 2000 output is also available on supported models — directly compatible with marine chart plotters, autopilots, and AIS systems from all major manufacturers.
How does AIM+ protect GNSS receivers in port environments?
Busy ports combine powerful VHF/UHF radio transmitters, radar systems, and deliberate or accidental jamming sources. AIM+ actively suppresses jamming across all GNSS frequency bands simultaneously — maintaining reliable RTK positioning where standard receivers would degrade or lose fix entirely.
Can Eview GNSS provide vessel heading without a gyrocompass?
Yes. A dual-antenna GNSS configuration provides true heading and pitch angles directly from satellite signals — accurate to 0.1° or better with a 1m baseline. This makes GNSS heading a cost-effective alternative to a gyrocompass for many vessel types, with the added benefit of no drift over time.

Navigate with Confidence at Sea

Our GNSS specialists will help you select the right marine GNSS receiver, antenna mounting, and integration setup for your vessel.

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