Does anyone know of a project like this for AIS Ship Tracking?
You could check out ShipPlotter which appears to be a windows-based AIS receiver. It mentions in the webpage that it accepts audio through your sound card. In the case of RTL-SDR, you'll want to use something like "Virtual Audio Cable" or "VB-Audio Cable" to route the audio from sdrsharp to ShipPlotter.
Check out AISMon; I've never used it, but it looks like it fits the bill. Here's a thorough tutorial: http://www.rtl-sdr.com/rtl-sdr-tutorial-cheap-ais-ship-tracking/
Three years later:
Currently, there is a solution available using GNU Radio … but it is complicated to set up and keep running.
Well, you're referring to Nick Foster's
gr-ais, which is a GNU Radio out-of-tree module, and actually, not that hard to set up.
In fact, it's included in current versions of the GNU Radio Live DVD, and you should be able to just boot that, and run
ais_rx; haven't tried that out lately, because I've installed it directly on my normal system; I've got GNU Radio installed, so the dependencies are already there:
git clone https://github.com/bistromath/gr-ais cd gr-ais mkdir build cd build cmake .. make make install