MapSource BlueChart is Garmin's exclusive marine cartography and was developed to provide you with mapping flexibility and options you've never had before. BlueChartCD-ROMs provide the same detailed, object-oriented cartography as the pre-programmed BlueChart data cards, including specific region breakdowns. BlueChart cartography is GARMIN's exclusive marine cartography. It complements GARMIN's new lineof handheld mapping products and marine chartplotters. This line of cartography products is designed to provide interactive viewing of detailed nautical chart data, thereby providing navigators with innovative object-oriented cartography. These detailed electronic nautical charts look just like paper charts when displayed on your GARMINchartplotter.