I find tidal current files for several EU countries on the MapMedia.com website, and they show compatibility with both MaxSea and Furuno NavNet3D. AFAIK both MaxSea and NN3D use the same MapMedia format, and when both NN3D and MaxSea exist on the same system they can share access. As I don't have MaxSea I haven't dealt with the details of sharing. For the MFD8 you can download the tidal current files, as with any chart file, load it on an SD card and install it on the MFD8. You will also need to purchase the DRM file (requires your system ID) and install that as well. If you plan on using it with MaxSea as well then you will need to research that (or wait until someone more knowledgeable can respond).