This Local Notice to Mariners could possibly impact cruisers going offshore of NC and SC and the outer edge of the test zone could affect cruisers on the NC/SC Waterway. The test center is 50 nautical miles east of Cape Fear.

SOUTHEAST ATLANTIC COAST-GPS NAVIGATION SIGNAL TESTING
On Feb 03 through Feb 10, daily from 1600 EST to 2145 EST, the GPS navigation signal may be unreliable due to testing on GPS frequencies used by shipboard navigation, aviation and handheld systems. Systems that rely on GPS, such as E-911, AIS and DSC may be affected at an approximate testing center point of 33 45.00N, 77 00.00W, with an impact radius of approximately 75 NM from center point. More information is available at the Coast Guard Navigation Center website www.navcen.uscg.gov. During this period GPS Users are encouraged to report any GPS service outages that they may experience to the Navigation Information Service (NIS) by calling (703) 313-5900 or by using the NAVCEN Website to submit a GPS Problem Report www.navcen.uscg.gov/?pageName=gpsUserInput.