Extension 42 extends {HEAD ~ the length} of {TAIL ~ tube} 37 underneath boats 11, 12, 13, and 14 
of
Extension 42 extends { HEAD ~ the length } of { TAIL ~ tube } 37 underneath boats 11 , 12 , 13 , and 14
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH