A vessel used to entrench pipelines beneath the seafloorThe Deep Blue is the world’s largest purpose-built ultra deepwater pipelay and subsea construction vessel. It can lay flowlines and umbilicals, and support developments in water depths ranging from 75m to 2,500m. It can carry out rigid pipelay (reeling) of up to 5,500t of 4in to 18in pipe or 4,000t of 4in to 26in rigid pipelay (J-Lay). Alternatively, it can lay up to 5,764t of 2in to 16in flexible pipe. Its maximum payload of 11,023t can consist of either two rigid reels (5,511t), flexible lines in two carousels (2,000t and 1,500t), eight portable 300t reels, 4,000t rigid pipe strings or 3,000t of subsea structures..