BlueChart g3 HD – HXEU004R – Irish Sea – microSD /SD Coverage:British coast: covers from Port Ellen on the Isle of Islay to Falmouth, including the Isle of Man and the Isles of Scilly. Irish coast: covers from Sheep Haven to Caherciveen, Republic of Ireland, including Londonderry, The Storks, Belfast, and Dublin.Unparalleled Coastal Chart Coverage.? .? .? Provides industry-leading coverage, clarity and detail with updated coastal charts that feature integrated Garmin and Navionics dataAuto Guidance technology calculates a route using your desired depth and overhead clearance and provides a suggested path to followIncludes Depth Range Shading for up to 10 depth ranges, enabling you to view your target depth at a glanceUp to 1′ contours provide a more accurate depiction of the bottom structure for improved fishing charts and navigation in swamps, canals and marinasNOAA raster cartography is available as a free downloadable feature via the ActiveCaptain appBlueChart g3 coastal charts provide industry-leading coverage, clarity and detail with integrated Garmin and Navionics data. Also included is Auto Guidance1. technology, which uses your desired depth and overhead clearance to calculate routes and provide a suggested path to follow – overlaid onto your chart. NOAA raster cartography is also available as a free downloadable feature via the ActiveCaptain app. It gives your chartplotter paper chartlike views of NOAA-surveyed areas in which individual points of interest are labeled with corresponding longitude and latitude information. Worldwide coverage is available by regions as accessory cards or via download; each region is sold separately.Auto Guidance TechnologyThe Auto Guidance feature calculates a suggested route using your desired depth and overhead clearance.Depth Range ShadingThis feature displays high-resolution Depth Range Shading for up to 10 depth ranges so you can view your designated target depth.Detailed ContoursBlueChart g3 charts feature 1′ contours that provide a more accurate depiction