@Comandodeltax

More or less the same answer as for your earlier question about BlueChart Americas 2008 and GMXT.
Garmin Mobile XT can show BlueChart g2 Vision maps. It will not be the same as with a real Garmin marine chartplotter. Colors differ from what it's supposed to show as a marine chart and some marine data features will not be accessible. None of the Vision features (auto guidance, enhanced 3D-view, aerial photographs etc.) are supported and the map therefore stores a lot of extensive data that Garmin Mobile XT can't handle. If you have plenty of storage space and don't care to waste it for partly unaccessible data (the auto guidance, enhanced 3D-view, aerial photographs data), then you may use BlueChart g2 Vision carts on a GMXT installation.
Garmin Mobile XT uses the colors for land based maps even for a marine chart. No marine mode with correct display of marine features.