Precise subsea metrology with less vessel time
Zupt’s C-PINS inertial navigation system delivers the measurements needed for subsea jumper and spool metrology. It has reduced vessel time by an average of 50% compared with traditional acoustic methods, lowering costs, reducing risk, and keeping offshore construction on schedule.
Compact and self-contained, C-PINS is designed for straightforward deployment across a wide range of offshore environments.
How C-PINS Supports Offshore Operations
C-PINS requires a single subsea connection to an ROV for power and communication. Minimal cabling and simple interfacing allow survey teams to begin work without complicated setup on vessels, rigs, or barges equipped with a work-class ROV.
The system operates effectively in shallow water and in the presence of drilling noise and vibration. Data is processed onboard, with real-time quality control available throughout collection.
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
Operational Benefits
- Fast mobilization through a single ROV connection and minimal cabling.
- Reported vessel time reductions of 50–70% compared with acoustic methods.
- Reliable operation in acoustically noisy environments, including drilling.
- Real-time quality control with error and loop-closure monitoring.
- Onboard data processing for quick, dependable deliverables.
- These capabilities make subsea metrology faster and more cost-effective while maintaining the accuracy needed for fabrication.
Experience, Quality Control, and Deliverables
C-PINS has been used on more than 400 projects worldwide over a 16-year period. Case studies have demonstrated measurements within tight tolerances, including sub-degree attitude and heading accuracy.
Live quality control allows clients to assess the data and make decisions during collection. A full deliverable is provided within 24 hours.
Specifications
Physical Specifications
- Depth rating: 4,000 meters
- Diameter: 26 cm
- Length: 46.5 cm
- Weight in air: 45 kg
- Weight in water: 20 kg
Accuracy
- Heading: ±0.05° over a 30-meter baseline; ±0.02° with longer baselines.
- Pitch and roll: ±0.01°.
- Position: ±30 mm over 30-meter baselines.
Discuss C-PINS and your subsea metrology requirements with our team.