Description: A US Coast and Geodetic Survey map of the Florida Keys from Sombrero Key to Sand Key, 1932. This survey chart shows all soundings expressed in feet. Navigational aids such as safety fairways, and visual markers such as lights, buoys, and beacons are shown as well as obstructions such as fixed bridges and submerged rocks. Measure of magnetic variance and annual change included. Scale 1:80,000. Key to NOAA maps.
Source: US Coast and Geodetic Survey, Gulf Coast Survey (Washington, DC: US Coast and Geodetic Survey, 1932)
Map Credit: Courtesy the U.S. National Oceanic and Atmospheric Administration |
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