Of course you can. Take the data, convert it to AIS NMEA
messages, broadcast over a network or save them to a text file and play it using the VDR plugin.
Is there something that already does it? Depending on whether you prefer Java or python, you may have a look at https://github.com/dma-ais/AisLib
If you are good with just the positions, you can save yourself the trouble with encoding AIVDM and generate just normal WPL sentence, which OpenCPN
can treat as APRS position reports (treated similarly to AIS) if you have it enabled as described in http://opencpn.org/ocpn/ais