you only need basic NOAA vector charts (stick with free built-in base maps or used BlueChart g2) or if you frequent Canadian waters.
Crucially, it respects your vessel’s parameters. If you input your boat draft as 5 feet, the Auto Guidance will route you around areas with depth readings of 4 feet or less. In the shallow waters of the back bays of New Jersey or the mud flats of the Hudson, this feature acts as a digital safety net, warning you of potential groundings before they happen. Garmin Bluechart G2 Vision VUS030R
Works with most Garmin marine plotters, including: you only need basic NOAA vector charts (stick