Looks like Navionics charts are back up on the Android Market. However, they seem to have consolidated their coverage areas. No more "British Columbia", for example, just "US & Canada" now. I'm assuming there would be nothing in the former that is not now included in the latter...
s/v Laelia - 1978 Pearson 365 ketch
s/v Essorant - 1972 Catalina 27