Through the tap , {TAIL ~ the sea water} enters {HEAD ~ the tanks} and , avoiding air chambers which would make it more difficult to submerge: once the structure is fully in position, tap is closed to begin the product collection operations 
Through the tap , { TAIL ~ the sea water } enters { HEAD ~ the tanks } and , avoiding air chambers which would make it more difficult to submerge : once the structure is fully in position , tap is closed to begin the product collection operations
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD 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