Positioning Products and Services

We offer a broad range of receiver options and subscription services, including a choice of two redundant satellite clock and orbit correction data messages:
C-NavC¹® or C-NavC²®. Each is simultaneously broadcast across the globe by Six Inmarsat geosynchronous satellites.


C Nav 5000


The new C-Nav5000 GNSS Receiver builds on the previous C-Nav3050 technology. It provides 5cm-level position accuracy, using the C-Nav Correction Service (CCS). Powered by the new Onyx GNSS Engine the C-Nav5000 is capable of tracking GPS, GLONASS, BeiDou, and Galileo. It has all-in-view parallel tracking with 252 channels for navigation, SBAS and 3 channels for CCS. Includes 4 serial ports, USB, and up to 8 Ethernet connections. With patented interference rejection and anti-jamming capabilities, and hardware capable of future enhancements, this will be a leading receiver well into the future.

C-Nav5000™ | Letter
Vector™ VS1000 2

Vector™ VS1000 GNSS Receiver

Oceaneering is an authorized reseller of the Vector VS1000, Hemisphere® GNSS’ premiere multi-GNSS, multi-frequency receiver designed specifically for the professional marine market. Providing precise heading, Athena RTK positioning, and full Atlas capability, its rugged design is compliant to IP67, MILSTD-810G, MIL-STD-202F, and IEC 60068-2 standards.

Vector™ VS1000 GNSS Receiver | Letter
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R330 GNSS Receiver

Oceaneering is an authorized reseller of the Hemipshere® R330 GNSS receiver–a full solution product in a compact enclosure. The R330 use the Hemisphere GNSS’ Eclipse™ platform and the latest GNSS patented technology. The R330 provides accurate positioning using several differential correction methods such as Athena™ RTK, Atlas® L-band corrections (Atlas Basic, H30, H10), Beacon, and SBAS. Patented Multifunction Application (MFA) firmware enables the R330 to smoothly transition between DGNSS systems.

R330 GNSS Receiver | Letter
ring laser gyro, C-Mariner


The C-Mariner up-scalable ring laser gyro (RLG) system is based on technology developed at Honeywell Aerospace, with a proven track record of over 3.6 billion operational hours.

The C-Mariner system is optimized for integration with the C-Nav3050 receiver, and is upgradable to output heading, pitch, roll, heave, position, and velocity. It is a fully compliant inertial navigation system (INS).

C-Mariner | Letter
C Nav1PPSI Converter Combiner

C-Nav1PPSI Converter/Combiner

The C-Nav1PPSI converter/combiner is a multi-function interface for GNSS receiver 1PPS signals. It has two opt-isolated 1PPS inputs, which are connected directly to the receiver's 1PPS outputs.

For high-integrity systems with dual GNSS receivers, the interface will "OR" the two TTL sources for output to peripherals that require a continuous 1PPS for time stamping. This output is maintained should either GNSS input fail.

C-Nav1PPSI | Letter
Hemispheregnss Vs330 Datasheet Web 3

Vector™ VS330 GNSS Receiver

Oceaneering is an authorized reseller of the Hemipshere® Vector VS330 GNSS receiver–a full solution product in a compact enclosure. The Vector VS330 uses all of the innovations in Hemisphere GNSS’ Eclipse™ Vector technology. Our optimized Eclipse Vector technology brings a series of new features to the Vector VS330 including heave, pitch, and roll output, and more robust positioning and heading performance.

Vector™ VS330 GNSS Receiver | Letter


C Nav C NAV289 GNSS Antenna


The C-Nav289 is a GNSS antenna that tracks all GNSS constellations, C-Nav corrections, and SBAS satellites. It has special out of band rejection filters for INMARSAT and IRIDIUM. It is housed in an all-polymer enclosure for marine application. The antenna is listed in the NOAA GNSS Antenna Calibration tables as C-Nav289.


C-Nav289 Antenna | Letter
GNSS signal converter, signal combiner, C-Nav combiner

C-Nav Combiner

The C-Nav Combiner enables the use of separate GNSS and L-band antennas. It is used in high-latitude operations where the low look angle of the separate L-band antenna enables reception of correction signals that is not possible with a standard integrated GNSS/L-band unit.

This combiner can be mounted on the mast or locally with the GNSS receiver.

C-Nav Combiner | Letter
Vector™ V500 2

Vector™ V500 GNSS Smart Antenna

Oceaneering is an authorized reseller of the Vector V500, Hemisphere® GNSS’ all-in-one multi- frequency, multi-GNSS smart antenna which provides RTK-level position and precise heading. This rugged design is sealed for the harshest environments and is a great solution for professional marine and other challenging applications.

Vector™ V500 GNSS Smart Antenna | Letter

Legacy Antennas

GNSS antenna, C-Nav286


The C-Nav286 is a GNSS antenna (AT1675-286) housed in a radome–thermoplastic enclosure. This antenna is listed in the NOAA GNSS Antenna Calibration tables as CNVC-NAV286

C-Nav286 Antenna | Letter
GNSS antenna, AD591


The AD591 antenna is a GNSS antenna (ALIAD591) housed in hard anodized, dichromate, and nickel-acetate–sealed aluminum with a 4-mm GRP pressure-molded radome. It has > 95 dB of out-of-band-rejection of the Inmarsat uplink.

AD591 Antenna | Letter
GNSS, standard antenna

Standard Antennas

We offer both standard integrated and compact GNSS antennas, enabling excellent tracking performance. The compact antenna is listed in the NOAA GNSS Antenna Calibration tables as NAV-ANT3001R.

Standard Antenna | Letter
GNSS base antenna

Base Antenna

The integrated base GNSS antenna (PN: NAV82-001021-3001LF) tracks multiple signals. It is designed to reduce multipath error to provide better real-time kinematic (RTK) corrections to the rover network. It has excellent tracking performance and a stable phase center.

The antenna is listed in the NOAA GNSS Antenna Calibration tables as NCT-ANT3001B.

Base Antenna | Letter
GNSS airborne antenna

Airborne Antenna

The airborne antenna (NAV82-001022-3001LF) tracks multiple signals and is designed to reduce multipath error to provide better RTK corrections to the rover network. It has excellent tracking performance and a stable phase center.

The antenna is listed in the NOAA GNSS Antenna Calibration tables as NCT-ANT3001A.

Airborne Antenna | Letter


C-NaviGator III, GNSS control, touchscreen

C-NaviGator III

C-NaviGator III software is an intuitive touchscreen controller that provides real-time system accuracy and performance parameters for multiple GNSS receivers. The rugged and reliable wheelhouse-friendly display supports multiple NMEA inputs and outputs. It is fully compliant with the latest guidelines for GNSS positioning within the oil and gas industry per the International Association of Oil & Gas Producers and International Marine Contractors Association.

C-NaviGator III | Letter
GNSS, position monitoring, C-Monitor


The C-Monitor application provides a graphical interface for supervising the operation and performance of one or more differential GNSS systems. It is compliant with the latest QA/QC guidelines for GNSS positioning within the oil and gas industry per the International Association of Oil & Gas Producers (IOGP) and the International Marine Contractors Association (IMCA).

The guidelines allow for pre-set user-defined alarm settings or limits, which can be set using the C-Monitor application.

C-Monitor | Letter
DP system monitoring, situational awareness, C-Scape


C-Scape position monitoring and situational awareness software provides independent real-time monitoring of any dynamic positioning (DP) system. The simple, intuitive interface furnishes situational awareness to users during drillship, dive boat, remotely operated vehicle (ROV) vessel, and other operations by blending multiple sensors with map file overlays.

C-Scape | Letter
tidal data software, C-Tides


C-Tides is a worldwide tidal data software package that combines the exceptional vertical accuracy of the C-Nav3050 receiver with advanced ocean surface models to deliver real-time elevations relative to the mean sea surface (MSS) and EGM2008.

Two independent options are offered—an online package for real-time acquisition, and an offline package with post-processing and other advanced features. Accuracy is within accepted constituent limits to achieve IHO SP44 Order 1 or better[1].

[1] Subject to tidal regime limitation.

C-Tides® | Letter

Correction Services

C-Nav Correction Service

C-Nav correction service licenses are available for Net-1 and Net-2 satellites, to which all service users have unlimited access.

We also provide satellite coverage information in multiple formats.

C-Nav GNSS Correction Services | Letter

*At one sigma within adequate Inmarsat and GNSS satellite visibility

Contact Us | Positioning Products and Services

Company page Since our founding in the early 1960s, Oceaneering has expanded and grown globally to service several industries such as the offshore energy industry, defense, entertainment, material handling, aerospace, science, and renewable energy industries. In 1964, Mike Hughes and Johnny Johnson formed a Gulf of Mexico diving company called World Wide Divers. The company grew in response to increasing demand for their services and in 1969 merged with two other diving companies to form Oceaneering International, Inc. To solve the toughest challenges, we do things differently, creatively, and smarter. As your trusted partner, our unmatched experience and truly innovative portfolio of technologies and solutions give us the flexibility to adapt and evolve, regardless of market conditions. Our mission is to solve the unsolvable. We thrive by creating industry-changing technically creative solutions for the most complex operational challenges under water, on land, and in space. Our five core values establish a common culture and demonstrate what is most important for us as a company. Since the beginning, the company has transformed from a small regional diving company into a global provider of engineered products and services. Today, we develop products and services for use throughout the lifecycle of an offshore oilfield, from drilling to decommissioning. We operate the world's premier fleet of work class ROVs. Additionally, we are a leader in offshore oilfield maintenance services, umbilicals, subsea hardware, and tooling. We also serve the aerospace, defense, and theme park industries. Underpinning everything we do, safety is not only the foundation of our core values, but it is vital to our unmatched performance record and company culture. The industries we serve are as diverse as they are complex. Whether we are engineering deepwater umbilicals or developing robotics for aerospace applications, the safety and health of our employees, vendors, and customers is an integral part of our day-to-day business. If we are working, then our responsibility is to be working safely. Since our inception in 1964, we have placed a high value on employee safety—from diving services and subsea inspection to vessel-based installation operations. We have and will continue to evolve not only our health, safety, and environmental (HSE) processes, but those of the industries in which we work. Although we have been fatality-free since 1999, our HSE journey goes beyond statistics. As our portfolio of services has grown, we have continued to prioritize and advance our approach to HSE.