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C-PINS is Zupt’s proven inertial navigation system that delivers the precise measurements needed for subsea jumper and spool metrology. Used on more than 400 projects worldwide over the past 16 years, it has reduced vessel time by an average of 50 percent compared to traditional acoustic methods. This efficiency lowers costs, reduces risk, and keeps offshore construction on schedule.

Compact and self-contained, C-PINS requires a single subsea connection to an ROV for power and communication. Its streamlined design eliminates complicated setup, allowing survey teams to begin work immediately on any vessel, rig, or barge with a work-class ROV. The system is versatile, easy to deploy, and proven across a wide range of offshore environments.

C-PINS provides millimeter-level accuracy in real time, even in shallow water or in the presence of drilling noise and vibration. With live quality control available throughout data collection and a full deliverable provided within 24 hours, it gives clients the confidence to make critical decisions quickly. By combining speed, accuracy, and reliability, C-PINS ensures subsea metrology is faster and more cost-effective.

Capabilities

• Fast to mobilize with a single ROV connection and minimal cabling
• Cuts vessel time by 50–70% compared to acoustic methods
• Includes real-time quality control with error and loop-closure monitoring
• Operates reliably in acoustically noisy environments such as drilling
• Processes data onboard for quick, dependable deliverables.

Applications

• Jumper and Spoolpiece Metrologies
• Pipeline Out-of-Straightness Surveys
• Buoy Setting for Well Installation
• Structure Installations
• Pipeline and Umbilical Installation
• USBL Smoothing
• Sparse LBL and Decommissioning.

Specifications

4,000m rated system

• 26cm diameter by 46.5cm long
• Weight in air 45kg / water 20kg

Accuracy

• Heading: ±0.05° over 30 m baseline. ±0.02° with longer baselines
• Pitch/Roll: ±0.01°
• Pos: ±30 mm accuracy over 30 m baselines

Conclusion

Zupt’s C-PINS has consistently demonstrated that inertial metrology is faster, more efficient, and more dependable than traditional acoustic methods. By cutting vessel time by more than half, it not only reduces project costs but also allows operators to accelerate offshore schedules without sacrificing accuracy. In extensive case studies, C-PINS achieved measurement precision within tight tolerances, including sub-degree attitude and heading accuracy, proving its reliability in even the most complex subsea environments.

Contact Zupt today to learn more about C-PINS and how it can enhance your subsea operations.

Leveling transition pieces (TPs) for offshore wind turbines requires precision, efficiency, and reliability. Zupt's Gyro Box (ZGB) delivers all three, providing real-time, high-accuracy heading, pitch, and roll data in a compact and robust package designed for offshore operations.

Streamlined Deployment. High-Performance Results

At the core of the Gyro Box is a defense-grade inertial measurement unit (IMU), enclosed in a durable IP67-rated housing. The system is lightweight and compact enough to be deployed by a single crew member using a small boom crane. Once positioned on top of the TP, the ZGB immediately begins supplying real-time attitude data to support critical leveling operations.

Its innovative crossbar design features two 1-meter baselines with integrated reflective prisms. These enable precise dimensional control even when the unit is mounted out of direct site from the TP flange. As long as the prisms remain tied to the same reference frame as the flange, the unit's flexible placement maintains measurement accuracy.

Built for Offshore Wind

The Gyro Box is the result of over 20 years of Zupt's experience in inertial technology. Every feature is engineered specifically for the offshore wind environment, from weather resistance and ease of handling to built-in system redundancy.

Performance Specs That Matter

• Heading Accuracy: ± 0.5°
• Pitch and Roll Accuracy: ± 0.2°
• Lightweight and Compact: Simple to deploy, even in tight conditions
• IP67 Housing: Rugged and weatherproof for marine environments
• Real-Time Output: Supports fast decision-making during TP levelings

 
Trusted, Consistent and Field Tested

The Gyro Box is already being used in active offshore wind projects around the world. Its real-time outputs and robust design help reduce operational time while ensuring every TP is leveled to spec.

Zupt delivers advanced surveying services and technologies for the energy industry, with trusted expertise in metrology, subsea positioning, integrity management, and offshore wind farm installations. Our solutions are built to make your operations smoother, more efficient, and easier to manage.

We’d love to learn more about your needs and explore how we can support your next project. Let us how we can help.

Expertise in Complex Sensor Integration

Zupt provides custom solutions for complex sensor integration to meet the most demanding offshore requirements. Whether acting as a consultant or as an integrated subcontractor, our team leads every aspect of the process including sensor selection, sourcing, integration, and testing.

We design and deliver sensor integration suites that address the challenges of offshore wind and subsea installations. Each suite can include cameras, lights, acoustic and mechanical proximity sensors, GNSS, multiplexors, inertial measurement units, and other advanced technologies. Working together, these systems provide real-time data and precise control of large-scale subsea templates and offshore structures.

When standard sensors are not enough, Zupt develops custom sensors specifically engineered for the unique conditions of each project. Our proprietary MUX technology and tailored designs ensure reliability, cost-effectiveness, and accuracy during every stage of offshore operations. Rigorous factory and site acceptance testing confirm each system’s performance before deployment.

Benefits of Zupt’s Complex Sensor Integration

• Tailored sensor integration suites
• Custom sensor development
• Proven MUX technology for reliable communication
• Rigorous testing to verify performance
• Comprehensive support from concept through operations

Subsea Template Monitoring

Zupt’s subsea template monitoring systems are built on the foundation of our integration expertise. These large-scale systems are designed to perform reliably in challenging offshore environments while delivering real-time, high-accuracy monitoring during installation and operation.

Our team manages the full process including sensor installation, cable routing, and precise dimensional control on the template. Each system is verified through both factory and site acceptance testing, ensuring it performs exactly as intended before operations begin.

At the heart of every monitoring solution is the Zupt MUX, which connects all sensor inputs into a single, unified system. Combined with custom software developed to each project’s specific requirements, this approach simplifies data handling, reduces the risk of failure, and improves operational awareness.

Key Template Monitoring System Features

• Integrated systems combining multiple sensors into one network
• Zupt MUX interface for streamlined data collection
• Custom software for each project’s unique requirements
• Dimensional control to ensure accurate sensor placement
• Full FAT and SAT testing for verified functionality
• Real-time, high-accuracy monitoring throughout operations

The Zupt MUX Advantage

The Zupt MUX is a robust subsea interface designed to unify sensor inputs and deliver reliable, real-time data transmission. Its modular, daisy-chainable architecture allows easy system expansion, while built-in redundancy enhances reliability.

Zupt MUX Key Features

• Daisy-chainable configuration for scalability
• Redundant ring topology for reliability
• High power capacity for sensors and lights with flexible AC input
• 10 Gbps uplink for high-resolution real-time monitoring
• Compact, corrosion-resistant titanium housing
• Plug-and-play setup with remote monitoring capability

End-to-End Project Support

Zupt supports every phase of your project, from concept and design to offshore operations. Our integrated approach combines advanced hardware, custom software, and proven testing processes to simplify complex subsea challenges. The result is a system that performs reliably, improves efficiency, and reduces risk throughout the project lifecycle.

Advancing Offshore Confidence

By merging deep subsea hardware expertise with intelligent software design, Zupt delivers integrated monitoring and sensor solutions that enhance precision, reliability, and safety. Our systems empower offshore operators to make confident, data-driven decisions while maintaining full control over critical subsea operations.

Contact Zupt today to learn more about complex sensor integration solutions and how it can enhance your offshore operations.