World’s largest pipelayer coming to U.S. GulfWritten by Marine Log Staff
APRIL 10, 2013—The world’s largest pipelay vessel—more than three American football fields long—will be coming to the U.S. Gulf of Mexico and offshore Brazil.
Owned by Italy’s Saipem, the M/V Castorone currently is contracted for work on three projects in the Gulf of Mexico: Amberjack Pipeline’s 219-km-long Walker Ridge export pipeline; Enbridge’s 60-km-long Big Foot lateral export pipeline; and the 350-km-long Keathley Canyon gas export pipeline.
Following completion of that work, the Castorone will move to the Santos Basin offshore Brazil to lay Petrobras’ Tupi NE-Cabiunas 380-km-long trunkline in depths to 2,230 m.
Classification society ABS reports in its Energy News that Saipem’s MV Castorone is designed for installation of large-diameter pipe in deep and ultra-deep water as well as extreme environments, including the Arctic.
The Castorone is classed by ABS as +A1, (E), +AMS, +ACCU, +TCM, CRC, HELIDK, UWILD, ICE CLASS A0 + BALTIC, ICE 1A, +DP-3. The vessel has a length of 330 meters (excluding its ramp/stinger) and breadth of 39 meters, with a displacement of 100,000 tons at maximum operational draft of 10 meters.
The Castorone can S-lay pipes up to 60 inches in diameter, prefabricating pipe strings 36 m long with the capability of
joining 2 by 18-m-long pipes as an alternative to 3 by 12 m conventional joints. The vessel will be equipped for the
future addition of a fixed tower for ”J” laying pipe. The stinger is specifically designed for any pipe diameter and water depth through continuous control of the overbend stresses in the pipe.
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