-
Federal
AIS Vessel Tracks 2015
National Oceanic and Atmospheric Administration, Department of Commerce —
Vessels traveling in U.S. coastal and inland waters frequently use Automatic Identification Systems (AIS) for navigation safety. The U.S. Coast Guard collects AIS... -
County
Loudoun Telecom Towers
Loudoun County, Virginia —
More MetadataTelecommunication is used to show the existing telecommunication antenna sites in Loudoun County. The coverage includes antennas mounted on buildings as... -
County
Loudoun Miscellaneous Cultural Points
Loudoun County, Virginia —
Metadata Miscellaneous cultural points are a base map data layer derived by automated processes and processed for cartographic representation at 1:2400 scale. The... -
Federal
AIS Vessel Tracks 2016
National Oceanic and Atmospheric Administration, Department of Commerce —
Vessels traveling in U.S. coastal and inland waters frequently use Automatic Identification Systems (AIS) for navigation safety. The U.S. Coast Guard collects AIS... -
Federal
AIS Vessel Tracks 2018
National Oceanic and Atmospheric Administration, Department of Commerce —
A vessel track shows the location and characteristics of commercial and recreational boats as a sequence of positions transmitted by an Automatic Identification... -
Federal
AIS Vessel Tracks 2017
National Oceanic and Atmospheric Administration, Department of Commerce —
Vessels traveling in U.S. coastal and inland waters frequently use Automatic Identification Systems (AIS) for navigation safety. The U.S. Coast Guard collects AIS...