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Coast Guard terminates LORAN-C signal

Date: February 08, 2010

Contact: Media Relations
(202) 372-4620

WASHINGTON — The U.S. Coast Guard terminated broadcast of the North American Long Range Navigation-C signal at 3 p.m. Monday with the U.S. Coast Guard Navigation Center in Alexandria, Va., coordinating the shutdown.

The LORAN system began as a radio-based navigation system during World War II under a secret program to provide the Allied forces with a reliable and accurate means of navigation at sea in any weather. Receivers for aircraft were eventually developed and the LORAN system expanded to all aspects of the military. LORAN Stations were first established in the Atlantic in 1942 and then in the Pacific. The LORAN system was then used by the Army Air Forces in the bombing campaign against the Japanese homeland. The Coast Guard retained and expanded the LORAN system at the end of the war for merchant and military use.

LORAN has, as a result of technological advancements in the last 20 years, become an antiquated system no longer required by the armed forces, the transportation sector or the nation’s security interests and is used only by a small percentage of the population. Continued use of limited resources to operate LORAN-C is no longer prudent use of taxpayer funds and is not allowed under the 2010 Department of Homeland Security Appropriations Act.

The decision to cease transmission of the LORAN-C signal reflects the president’s pledge to eliminate unnecessary federal programs.

Historical information on LORAN-C may be found on the Web site of the Coast Guard Historian’s Office at and on the Coast Guard Compass blog at

Notice of the termination of the signal was published in the Federal Register Jan. 7. Termination of the program was supported through the enactment of the fiscal year 2010 Homeland Security Appropriations Bill.

The notice of intention to terminate the LORAN-C signal may be viewed online at, docket number: USCG-2009-0299. The Record of Decision and Programmatic Environmental Impact Statement may be viewed online under docket number: USCG-2007-28460.
More information on terminations, reductions and savings contained in the fiscal year 2010 budget, including LORAN-C, may be found at


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