Navionics Regions East Preloaded MSD Format. Navionics is a powerful electronic chart solution providing more regional marine and lakes content than other product on the market! Get detailed Nautical Chart, SonarChart 1' HD bathymetry map, and Community Edits plus dailyupdates for one year! Includes full marine coverage and more than 6,500 lakes in CT, DE, IL, IN, KY, MA, MD, ME, MI, NC, NH, NJ, NY, OH, PA, RI, SC, TN, VA, VT and WV, plus US waters of the region's Great Lakes. Nautical Chart and SonarChart are preloaded. Simply plug your card into your PC/Mac to download the most updated charts and Community Edits anywhere within the entire region. 16 GB card and USB reader included. Features Marine and lake charts. One foot contours. CT, DE, IL, IN, KY, MA, MD, ME, MI, NC, NH, NJ, NY, OH, PA, RI, SC, TN, VA, VT and WV all in one. 6,500 lakes and growing. Daily updates Navionics is a powerful electronic chart solution providing more regional marine and lakes content Marine and lake charts. One foot contours CT, DE, IL, IN, KY, MA, MD, ME, MI, NC, NH, NJ, NY, OH, PA, RI, SC, TN, VA, VT and WV all in one. 6, Daily updates