Chart Detail of Castine

This chart of Castine Harbor shows the detailed information provided on a nautical chart, including water depths, rocks and shoal locations, an abandoned lighthouse, buoys, and the intertidal zone, the area that dries out at low tide. This is a modern chart, now available digitally on line and on Global Positioning System Devices.

This is a detail from NOAA Chart 13309, Penobscot River.