When Technip introduced its pipelay vessel Deep Blue in 2001 it was both the largest and fastest reel pipelay vessel of its type. One of the key design objectives was to have it perform pipeline touchdown monitoring (TDM) without a following survey vessel. It achieved this with its own flying cage remotely operated vehicles (ROVs) and long-range sonar technology. As Donald Faulds, engineering manager at Technip’s remote systems unit, and Dave Matthews, survey manager at Technip’s of....

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