Problem
A floating solar park anchored to the lakebed of a dam reservoir with mooring lines designed to flex with changing water levels, required a routine inspection of six of the more hard-to-access lines.
Solution
The Tethys ONE completed the mooring line inspections in just 1.5 days, cutting the planned timeline of 3 days in half. This also included conducting an unplanned search for sections of solar panels that had sunk during a fire.
Compared to 2-3 mooring lines per day with their existing ROV, the Tethys ONE can inspect up to 8. What set it apart in achieving this result was its exceptionally fast setup time - under 10 minutes - and minimal infrastructure requirements, operating in this case from a simple pontoon boat. Simple to use in all aspects, it drastically sped up operations without sacrificing quality.
Clever use of sonar, paired with the unmatched stability of our in-house sensor fusion algorithm, enabled us to lock depth and orientation, positioning the Tethys ONE at a distance where the entire flex line was clearly visible and measurable on sonar. By knowing the scale and combining sonar data with visual inspection, we accurately assessed the mooring line’s condition and length.
Flexibility:
Impressed by the Tethys ONE’s rapid set-up time, localization and speed, the client requested an unplanned search for a section of solar panels that had sunk during a fire and needed to be recovered. Within 18 minutes, we located the panels and provided their exact position for future retrieval. With a minimal footprint on the pontoon boat, rapid setup, and navigation assist features that significantly enhance ease of use, the Tethys ONE enabled us to quickly adapt the inspection plan based on real-time findings, without slowing down operations.
.jpg)
