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The National Ice Center (NIC) is a tri-agency operational center whose mission is to provide worldwide navigational ice analyses for the armed forces of the United States, allied nations, and U.S. government agencies.
It is represented by the United States Navy (Department of Defense); the National Oceanic and Atmospheric Administration (Department of Commerce); and the United States Coast Guard (Department of Homeland Security). The National Ice Center is a subordinate command of the Naval Oceanographic Office (NAVOCEANO). Originally known as the Navy/NOAA Joint Ice Center, which was established on December 15, 1976 in a memorandum of agreement between the U.S. Navy and NOAA, the National Ice Center was formed in 1995 when the U.S. Coast Guard became a partner. The National Ice Center produces global sea ice charts and various cryospheric GIS products. They also name and track Antarctic icebergs if greater than 10 nautical miles (20 km) on its longest axis.
Icebergs must be a minimum of 19 kilometers in length to be tracked by the NIC.
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