The rearward section includes an interior chamber and an opening or {HEAD ~ channel} that extends from {TAIL ~ the chamber} to provide a water flow path between the chamber and the surrounding body of water 
extends from
The rearward section includes an interior chamber and an opening or { HEAD ~ channel } that extends from { TAIL ~ the chamber } to provide a water flow path between the chamber and the surrounding body of water
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH