Chartmonger is a tool to view NOAA nuatical charts on top of the familiar Google Maps interface. Use the slider to change the transparency of the charts. This tool is not for navigational use - see the about page for more information. For official charts, cruising guides and more, visit our chart store!
This tool allows you to view Nautical charts published by the National Oceanographic and Atmospheric Administration (NOAA) on top the a Google Map interface. Although the charts are updated approximately once a month, they are not for Navigational use. More information about the NOAA chart server is available here. Official charts can be found at our chart store.