said steel pipeline having a predetermined average outside diameter and extending in a first J curve from substantially said platform to the seafloor, along said sea floor, and in a second J curve from said seafloor to said buoy, with said {HEAD ~ steel pipeline} being free of {TAIL ~ attachment} to the seafloor in its extension between said J curves 
free of
said steel pipeline having a predetermined average outside diameter and extending in a first J curve from substantially said platform to the seafloor , along said sea floor , and in a second J curve from said seafloor to said buoy , with said { HEAD ~ steel pipeline } being free of { TAIL ~ attachment } to the seafloor in its extension between said J curves
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