In addition, the link forms a loop with {HEAD ~ both ends} thereof being connected to {TAIL ~ the surface installation}  
connected to
In addition , the link forms a loop with { HEAD ~ both ends } thereof being connected to { TAIL ~ the surface installation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH