Seaway Dome

The gap

Critical subsea assets are still checked mainly by periodic campaigns. Blind periods remain between inspections. Vessel mobilisation is expensive and slow. Low-cost AUVs can patrol more often, but they need AUV INS correction to revisit the same seabed locations and compare change reliably.

The SeaWay Dome architecture

SeaWay Dome installs Lattice seabed devices around critical assets, approaches and patrol routes. Lattice devices monitor local asset, seabed and environmental conditions. Lattice Neptune provides seabed reference points for repeatable AUV patrols and information recovery. OIS can supply, install and operate the field as an information service.

Operating chain

Install Lattice devices at assets and patrol routes. Patrol repeat AUV routes using seabed reference points. Recover processed information from the field. Report change records, confidence levels and recommended action. Act only under customer direction: inspect, repair, watch or respond.

Customer outputs

• Asset integrity: cable, CPS, span, mooring, pipeline and structure monitoring.
• Security monitoring: seabed change, disturbance, obstruction and suspicious activity.
• Information-as-a-service: OIS supplies, installs, operates and reports.
• Customer-governed response: OIS provides information; operational response remains customer controlled.

Applications

• Subsea cables and power interconnectors.
• Offshore energy export routes, pipelines and structures.
• Ports, harbour approaches and utilities.
• Strategic passages and territorial-water routes.
• Post-event assessment after storms, vessel activity or suspected interference.