I use CM93 as do most OpenCPN
users in Australia
. The links in this old thread are still valid. As far as I know they are the latest available. You must use Edition 2, not Edition 3.
are from 2011, so be aware that some changes would not have been applied.
I also use Navionics
on ny Android tablet, and the charts are more recent. That was around $50 3-4 years ago, and they have since moved to a annual subscription basis for updates. But I couldn't find the Australian charts on Google
Play when I looked for prices just now.
Are you using a Windows or Android tablet? I have seem some comments on here about problems with W10 not seeing the GPS