The Pipeline Inspection, Maintenance and Repair robot, "Nautilus", can deliver full pipeline Inspection, Maintenance and Repair (IMR) service with less time, less resources, and less risk. Delivering all tasks in a single robot represents a major achievement, and a significant reduction in CO2 emissions since all the IMR activities are performed in a single trip of a vessel and with a single crew. By performing all repairs in a closed habitat, all debris from the repair is brought back to the surface for disposal. In the Oil and Gas industry, subsea pipelines are the vital part of installed subsea infrastructures. As these pipelines age, they are subjected to different forms of degradation, including internal corrosion. In the worst cases, this degradation leads to through?wall defects, leaks and production shutdown. Currently, underwater pipeline repairs are conducted by saturation divers to stop or prevent product leakage. Nautilus is combining all the IMR tasks into a single robot represents a major achievement. This technology is capable to repair all pipeline diameters. The current robot covers all sizes from 8” – 20” in. The environmentally controlled habitat allows for the application of topside repair technologies to subsea assets – using only off-the-shelf raw materials. Comparing the workflow between the conventional approach and Nautilus. Clearly, deciding to perform remedy action for non-leak repairs can be made faster as the operating cost is over 20% cheaper than a conventional repair. As such, asset owners can resume full operations faster when compared to the conventional approach. The Nautilus Robot recently utilized in the emergency pipeline repair operation in the Gulf of Thailand in October 2023. The process involves engineering calculation, Pit test demonstration, HAZOP prior to the operation, offshore operation and the final review and report with the customer acceptance.