U.S. Coast Guard Navigation Center

Overview
The U.S. Coast Guard Navigation Center operates services and provides information that enhances the safety, security, and efficiency of U.S. waterways and civil GPS users. These services include:


 * Operating the Nationwide Differential GPS System
 * Operating the Long Range Identification and Tracking business helpdesk
 * Operating the Nationwide Automatic Identification System
 * Publishing Notices to Mariners and the Light List
 * Disseminating navigation information through 24/7 operations center and the NAVCEN website
 * Managing the Integrated Aids to Navigation Information System
 * Managing electronic charting portfolios for U.S. Coast Guard units
 * Serving as the primary U.S. government interface with GPS users (except aviation and military)
 * Receiving and coordinating investigation of GPS outage reports