BlueChart g2 Vision
Garmin

There are many Blue Chart features including, High resolution satellite imagery, Aerial reference photography, Mariner’s Eye View , Fish Eye View , Auto Guidance , Fishing charts, The auto guidance feature plots a course for you. By entering your boats details including depth and mast you will get a plot which avoids shallows and bridges.
Garmin's Description
Plug a BlueChart® g2 Vision SD data card into your chartplotter, and youll get a whole new perspective on nautical navigation.
BlueChart g2 Vision offers the same rich detailed charting of BlueChart g2 to help you get the most out of your unit. In addition, g2 Vision features a growing database of high-resolution satellite imagery, above and below the water 3D perspective, auto guidance technology, aerial photographs for real world reference and coastal roads with points of interest. See our product compatibility table for a list of products that Garmin recommends with this software.
BlueChart g2 Vision is available on preprogrammed SD data cards. BlueChart g2 Vision features:
BlueChart g2 Vision SD cards enhance the preloaded maps on your chartplotter and add a whole new dimension of exceptional features such as:
High resolution satellite imagery, when overlaid on the chart, provides the mariner with unparalleled situational awareness.
Aerial reference photography provides “real world” photos of ports, harbors, marinas, waterways, navigation landmarks and other points of interest, offering the mariner another powerful tool for navigating unfamiliar waters
Mariners Eye View perspective provides a birds eye view from behind the boat showing the chart information for a quick, reliable and easy position fix.
Fish Eye View 3D perspective provides an underwater view that visually represents the sea floor according to the charts information.
Auto Guidance technology searches chart data to suggest the best passage to a destination.
Fishing charts allow the mariner to hide navigation data from the SD card while leaving the bottom contours and depth soundings for their next fishing adventure.
Includes tides, currents, marine services, coastal roads and points of interest.
Detailed BlueChart g2 maps are included on the card to supplement the maps on your chartplotter.
http://www8.garmin.com/cartography/g2vision/
