Plug a BlueChart g2 Vision SD data card into your chartplotter and you"ll 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.PRODUCT FEATURES:Detailed coverage of Southern Sweden from Sodertalje to Trelleborg;Also includes detailed coverage of Kalmar Norrkoping and Karlskrona lakes Sommen and Nommen as well as the islands of Gotland Oland and Bornholm.