Navigation Center Logo
Skip Navigation Home | DGPS Advisories | GPS Constellation Status | GPS Testing Notices | LNMs | Almanacs | Nav Rules | AIS | International Ice Patrol | Contact Us | Search
Primary Mission Areas:
Services & Reporting:
Maritime Information:
U.S. COAST GUARD NAVIGATION CENTER


America's Waterway Watch See Something Say Something
America's Waterway Watch See Something Say Something!

Practice Your NAVRULES!

Presented below is a randomly selected NAVRULE problem from our flashcard database. In many cases, what is presented are words or phrases, and you should think of the definition or definitions that meet the condition(s) of the words or phrases. Then, click on the image to obtain the correct answer(s).

navRules - Flash Card Question

News and Notices:
Item: Get the latest News and Updates RSS Feeds (LNMs, LL Corrections)
Item: From Feb 03 through Feb 10, 2012, daily from 1600 EST to 2145 EST, the GPS navigation signal may be unreliable off of the North Carolina coast due to testing on GPS frequencies used by shipboard navigation, aviation and handheld systems. Please read our special notice for specific information.
Item: In response to the situation at the Fukushima Nuclear Power Plant in Japan, the U.S. Coast Guard recommends, as a precaution, that vessels avoid transiting within 20 kilometers/10.8 nautical miles of the Fukushima Nuclear Power Plant (37°25.5'N, 141°02.0'E)...read the entire notice.
Item: The U.S. Federal Communications Commission (FCC) has issued several documents detailing recent stepped up jamming enforcement actions targeting online U.S. retailers of illegal radio frequency jamming devices. Read more on the GPS.gov website...
Item: During the 25th anniversary of forming of CGSIC, the 51st meeting of the Civil GPS Service Interface Committee was held Sept 19-20, 2011 at the Portland, Oregon Convention Center in conjunction with the ION GNSS 2011 meeting. All of the presentations are available for viewing.
Item: The 50th Space Wing's 2nd Space Operations Squadron installed a major software release containing 104 fixesto the GPS Ground Segment.  Read more...
Item: Please see the U.S. Coast Guard's Marine Safety Alert, "Mariner's Safety Endangered" regarding instances in which VHF distress alerts by Digital Selective Calling lack location and identification information. Read more...
Item: The 50th Space Wing’s 2nd Space Operations Squadron accepted command and control of the second Global Positioning System Block IIF satellite on August 19th.  Read the press release in its entirety.
Item: The CGSIC U.S. States and Local Government Subcommittee (USSLS) will conduct a regional meeting August 24th, 2011 at the Caltrans TransLab Facility, 5900 Folsom Blvd., Sacramento, California. For more information, please see our CGSIC Meetings page.
Item: The Air Force 50th Space Wing successfully completed a two phase Global Positioning System constellation expansion known as "Expandable 24". ...read the Media Release NO. 1106-001 dated June 15, 2011.
Item: You may view previous news items here.