{TAIL ~ Extension} 41 is comprised of {HEAD ~ four separate small pipes} which terminate at points 43, 44, 45 and 46, to correspond to boat locations in tube 37 
{ TAIL ~ Extension } 41 is comprised of { HEAD ~ four separate small pipes } which terminate at points 43 , 44 , 45 and 46 , to correspond to boat locations in tube 37
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD 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