Posts Tagged ‘navigation’

Loran-C Shut Down After More Than 67 years

Tuesday, February 9th, 2010

Crews at the Coast Guard Long Range Aids to Navigation stations, including the six Alaska-based stations, turned off their domestic signal across the nation at 11 a.m. Monday, February 8, 2010.

The shutdown of the signal concludes the broadcast of the U.S. domestic signal. Stations Attu and Shoal Cove, which are bound by bi-lateral agreements with Russia and Canada, will continue to broadcast their international signals until later this year. All the stations will continue to be maintained and manned as the closure of the facilities proceeds over the coming months. Decommissioning dates have yet to be set and plans for the dismantlement of the stations are in development.

Loran-C was originally developed to provide radio-navigation service for U.S. coastal waters and was later expanded to include complete coverage of the continental U.S. as well as most of Alaska. Twenty-four U.S. Loran-C stations work in partnership with Canadian and Russian

stations to provide coverage in Canadian waters and the Bering Sea. The system provided better than 0.25 nautical mile absolute accuracy for within the published areas and provided navigation, location, and timing services for both civil and military air, land and marine users. It was approved as an en route supplemental air navigation system for both Instrument Flight Rule and Visual Flight Rule operations.

The Loran-C system served the 48 continental states, their coastal areas, parts of Alaska and neighboring countries for 67 years, 8 months and 24 days.

source: USCG press release

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Coast Guard Issues Deviation for Berkley Bridge Drawbridge Opening

Friday, October 9th, 2009

The Fifth Coast Guard District commander has issued a temporary deviation from the regulation governing the operating schedule of the Berkley Bridge across the Eastern Branch of the Elizabeth River at Norfolk, Va., at the request of the Virginia Department of Transportation.

This deviation will evaluate a change in the drawbridge’s operating schedule to determine whether a permanent schedule change is needed.

The temporary deviation will be in effect from Oct. 9, 2009, through March 9, 2010. During this time, the drawbridge will open to vessels requesting passage at 9 a.m., 11 a.m., 1 p.m., and 2:30 p.m., Monday through Friday, except federal holidays. At all other times, the bridge will operate as scheduled. A Notice of Proposed Rule Making for a 3-year deviation plan lasting until Oct. 5, 2012 is also being considered.

The Virginia Department of Transportation will have signs in place before Oct. 24, 2009 alerting maritime traffic of these new regulations. Beginning Monday, Oct. 19, motorists should prepare for scheduled stops at the I-264/I-464 Berkley Bridge at 9 a.m., 11 a.m., 1 p.m., and 2:30 p.m., Monday through Friday, except federal holidays. The duration of the traffic stops will be dependent on the volume of maritime traffic.

Interested parties are requested to express their views, in writing, on the temporary deviation from the operating regulations. Comments will be received for the record at:

Commander (dpb)

Fifth Coast Guard District

431 Crawford St.

Portsmouth, Va., 23704

Written comments on this proposal must be submitted on or before Dec. 8, 2009.

A copy of the Docket USCG-2009-0754 published in the Federal Register on Oct, 9, is available to be viewed by the public on their website.

For further questions on this proposed rule or copies of Public Notice 5-1158 which describes the deviation schedule in detail, call Waverly Gregory, bridge administrator for the Fifth Coast Guard District, at (757) 398-6222 or e-mail at Waverly.W.Gregory@uscg.mil.

source: USCG press release

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