NASDrill RS925 Advanced LBL / SBL acoustic positioning
Combining long baseline (LBL) and short baseline (SBL) positioning for ultra-deepwater drilling vessels
NASDrill RS925 is designed specifically to meet the dynamic positioning (DP) reference requirements of ultra-deepwater drilling vessels by providing independent LBL and multiple SBL outputs to the DP system up to 1Hz.
NASDrill RS925
Independent LBL and SBL DP references for ultra-deepwater drilling vessels
Introduction
The NASDrill vessel systems are acoustic positioning and tracking systems developed to meet the demanding requirements of the drilling and DP sensor markets.
The systems utilise acoustic digital spread spectrum (ADS2) signalling technology, providing reliable and robust acoustic positioning in deepwater and challenging environments, enabling:
- Acoustic DP reference
- Riser angle monitoring
- Monitoring of ROV activities
At Imenco, we know that the safe operation and reliability of our acoustic positioning products are important to our clients. As a result, we provide vessel system upgrades in order to manage obsolescence and benefit from the latest digital technology.
Product sheet - NASDrill Vessel SystemsSpecification Sheet - NASDrill RS925 2023Track Record - NASDrill USBL SystemsSpecifications
- Combine the two most accurate acoustic positioning techniques available
- Accuracy 0.15% slant range (SBL only)
- 1.0 m RMS @ 4000 MSW depth (LBL only)
- Quoted accuracies are total system
- Small beacon grid size (normally 500-700 m)
- Integrates with NASeBOP emergency acoustic BOP control system
- Differential riser angle monitoring (flex joint)
- Position and differential angle alarms and watch circles
- Redundancy in all aspects of the system
- Provides multiple independent SBL and LBL position solutions
- Simple and fast calibration
- System can be changed to meet client or operational requirements
- Fully compliant with Petrobras specifications