In the prior art, an end of such pipeline might be terminated at the base 44 where the buoy 40 was anchored, and {HEAD ~ a vertical pipe} would extend up from {TAIL ~ the base} to the buoy 40 
extend up from
In the prior art , an end of such pipeline might be terminated at the base 44 where the buoy 40 was anchored , and { HEAD ~ a vertical pipe } would extend up from { TAIL ~ the base } to the buoy 40
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH