With Navionics Updates, if you already own a chart card, you can get the most up-to-date Navionics+ content at a great price. Simply activate this card using your card from Navionics, C-MAP, Fishing HotSpots, Garmin, Lakemaster, Lowrance, Magellan, or TrakMaps. •Marine and lake chart • Code: NAVU35XG - CHINA SEA & JAPAN: China, Taiwan, North Korea, South Korea, Vladivostok in Russia, Hiroshima, Kitakyushu, Fukuoka in Japan. • Plug and play: Preloaded card with both Nautical Chart and SonarChart™ • View detailed shorelines with marinas, docks and boat ramp locations. • Increase your awareness of shallow waters and hazardous areas at any depth level including shoals, rocks, wrecks and more. • Target underwater structure with up to 0.5m HD contours to find the best fishing locations: roadbeds, foundations, bridges, brush piles, culverts and creek channels. • Consult tides and currents to plan your boating activities. •Download Community Edits, valuable local information added by millions of Navionics Boating app users. • Get the most current charts every day with daily updates for one year.