“The SBI performed better than all other technologies we tried. It successfully completed the scope of work and surveyed over 240 kms of the NORNED cable with power OB. We were so pleased with its performance, we recommended to our sister company Britned to spec the SBI into their ITT as well”
“DOF Subsea recently contracted PanGeo Subsea to provide hardware and personnel to conduct a short survey of a buried umbilical cable for a major UK operator. Upon the commencement of the operations it was immediately apparent that the SBI system was fully able to consistently track the product and the client subsequently requested additional survey work which was executed by the same offshore team. Due to the nature of the work scope the mobilization date was not fixed until quite late in the proceedings but a rapid mobilization combined with prior experience of DOF Subsea personnel, hardware and procedures allowed the process to be completed within one day. Initial data was delivered on board prior to demobilization allowing a streamlined data flow to be maintained.”
“Impressive equipment and overall good service. Efforts made in the pre-mob readiness were very much appreciated.”
The Sub-Bottom ImagerTM (SBI) uses advanced acoustic technology to image beneath the seabed. Applying state-of-the-art beamforming synthetic aperture sonar arrays, that provide a real-time 3D view of the sub-seabed, the SBI gathers highly accurate and usable data. By combining continuous 5m wide data swaths, that penetrates the seabed up to 8m, the SBI identifies buried objects, anomalies, geohazards, and stratigraphy to a 10cm resolution.
The SBI can be deployed on multiple platforms for all your sub-survey requirements. The SBI ROV mount can be adapted to fit all work-class ROVs with custom skids available to fit lighter ROVs. The SeaKite, a remotely operated towed vehicle (ROTV), allows high-speed data collection in waters up to 250m. For nearshore applications, the GeoArm and GeoLink can be mounted to vessels and operate in shallow waters such as ports and rivers.
• Depth of burial accuracy better than 10cm
• Cable remains energized during survey, eliminating the need for cable shutdown
• Cable depth of burial to 5m below seabed
• Adaptable mounting enabling export cable surveys from beach to platform
• Acoustic imaging of non-ferrous targets; the only LMB detection method
• Accurate position, sizing of all identified magnetic pUXO targets
• 75% reduction in false positives and magnetic pUXO target list
• SeaKite collects data 7x faster than a ROV
• Location of all buried debris, assets, and concrete mattress
• Depth of burial accuracy better than 10cm
• 5m data swath maps entire mattress footprint
• Mitigate punch-through risk
Below are some examples of data collected by the SBI:
| SBITM Payload Package | Operating Specifications |
|---|---|
| • 5 x 8 channel hydrophone arrays • 3 x HF chirp projectors: 4 - 14 kHz • INS/DVL - IXBLUE PHINS or similar |
• Operating depth from 3m to 1,000m • Survey altitude: 3.5m +/- 0.5 off seabed • Survey speeds: up to 2 knots |
| SBITM ROV Interfaces | Interface Requirements |
| • All work-class ROVs • Lighter ROVs • Excluding Observation Class ROVs |
• 115 volts AC, 50/60 Hz, 6 amp circuit • 1000 Base-T 1GB Ethernet wired con. • 1 hydraulic JIC4 port @ 2500 psi |
Take a look at our SBI Survey on a live HVDC cable between Caithness and Moray
Take a look at our SBI Survey locating and mapping UXO’s in the port of Liverpool
“The SBI performed better than all other technologies we tried. It successfully completed the scope of work and surveyed over 240 kms of the NORNED cable with power OB. We were so pleased with its performance, we recommended to our sister company Britned to spec the SBI into their ITT as well”
“DOF Subsea recently contracted PanGeo Subsea to provide hardware and personnel to conduct a short survey of a buried umbilical cable for a major UK operator. Upon the commencement of the operations it was immediately apparent that the SBI system was fully able to consistently track the product and the client subsequently requested additional survey work which was executed by the same offshore team. Due to the nature of the work scope the mobilization date was not fixed until quite late in the proceedings but a rapid mobilization combined with prior experience of DOF Subsea personnel, hardware and procedures allowed the process to be completed within one day. Initial data was delivered on board prior to demobilization allowing a streamlined data flow to be maintained.”
“Impressive equipment and overall good service. Efforts made in the pre-mob readiness were very much appreciated.”
