The system also serves as a testing system for {TAIL ~ control umbilicals} that usually are located near {HEAD ~ the pipelines} 
The system also serves as a testing system for { TAIL ~ control umbilicals } that usually are located near { HEAD ~ the pipelines }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD