I am working with similar data for some uncharted areas of BC.
OpenCPN doesn't take these data directly/easily. (If a gpx file is available, you could bring this in, but that might be very cluttered.)
I have been using QGIS to
import these data (I
import xyz files), and then to output various files (including
depth contours though I am not so happy with the contours).
You could create Geotif files which can then be overlaid in
OPENCPN as a transparent layer using Photolayer
plugin. Indeed you could do this using the easily accessed "PDF Plotsheet" provided for each USACE
survey.
(QGIS can create a geotiff of the cropped pdf, after you use its calibration function.)