Once we get the OpenCPN Wiki online, it will probably be translated to 7 - 10 languages fairly quickly as OpenCPN has a fairly serious effort. Perhaps some of them would help here?
For the website Opencpn: See the bottom
http://opencpn.org/ocpn/about#Int about 6 languages
For the program OpenCPN:
http://opencpn.org/ocpn/internationalization