Traditional subsea pipeline surveys are slow and expensive. Generally, an ROV (remotely operated vehicle) would undertake spot dives on suspected areas where anomalies may be found along the pipeline and video footage is acquired. This is a time-consuming and inefficient process, as the ROV needs to be stopped regularly due to poor visibility and insufficient image quality to be able to find anomalies. This requires more offshore personnel for human intervention, resulting in a slow inspection process and as a side effect high CO_2 emissions due to long surveys.
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