Oligohaline Dispersion

We have two moorings that need to be recovered in the Delaware River. One is near the Delaware Memorial Bridge and the second near the Commodor Barry Bridge. The moorings have no surface signature and we would like to use the R/V Sharp's multibeam to image the moorings and its dynamic positioning to guide their recoverty via trawling or divers. The moorings have ~200 feet of line that runs from the frame to an anchor (75 lb doormoor) that provides a target to grab with a grappling hook. However, one of the moorings is entangled in a debris field (based on an earlier attempt to retrieve it), and we might need to send divers down to retrieve it.