PmWiki
A list of all the Navtex-Stations can be viewed in GoogleEarth.
I personally use a Silva S15-N. Output is via an serial cable, which is currently formatted by a simple perl script.
Links
http://www.users.zetnet.co.uk/tempusfugit/marine/navtex_notes.htm
http://www.frisnit.com/cgi-bin/navtex/view.cgi
