Offshore Wind

Offshore monopile inspections using conventional lightweight WROVs are hampered by long setup times (24–36 hours), high vessel requirements (heavy-duty cranes, large deck space, containerized control stations), and inflexible deployment options. These factors significantly increase operational costs, limit platform choice, and slow the pace of inspections across wind farms, reducing overall efficiency.

To demonstrate our offshore capabilities, we conducted a wind farm monopile inspection in the Baltic Sea using the Tethys One, launched from a CTV.
All equipment, including the ROV, control station, and crane-mounted LARS, were installed onboard in just 16* minutes,with a minimal footprint. Deployment, inspection, and recovery were completedin under 90 minutes on site.

Automationreduced pilot workload and enabled seamless data collection. Following apre-defined path 10 m abovethe seabed, the Tethys One collected geo-referenced data used to generateconsistent bathymetric and photogrammetric maps around the monopile, revealingminor signs of scour. Pilot-assist features enabled stable, precise inspectionsof weld circumferences (although marine growth obscured the weld itself) andanodes, using automated distance and position hold.

Unlikeconventional lightweight WROVs, which require 24 to 36 hours for setup andinstallation, as well as a vessel equipped with a heavy-duty crane and spacefor a containerized control station and workshop (often welded onto the deck),the Tethys One can deploy from almost any platform. This includes a CTV, TP, oreven the inspection structure itself. As a result, setup time and operationalcosts are drastically reduced, while deployment flexibility is significantlyincreased.

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