{HEAD ~ An installation} for collecting {TAIL ~ oil} or fuel spilled on the sea comprising an oil collecting stage, a first tank and a second tank as cascades, a suction pump and a final tank for separation of oil from water all of which are connected with pipes in the set forth order 
{ HEAD ~ An installation } for collecting { TAIL ~ oil } or fuel spilled on the sea comprising an oil collecting stage , a first tank and a second tank as cascades , a suction pump and a final tank for separation of oil from water all of which are connected with pipes in the set forth order
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH