Is LORAN-C going away? - SailNet Community
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post #1 of 39 Old 02-05-2009 Thread Starter
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Is LORAN-C going away?

Looks like the Coast Guard is considering doing away with the system, or automating it, or farming it out: USCG LORAN PEIS » Background

I would've thought we'd keep it just to have an alternate to GPS?
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post #2 of 39 Old 02-05-2009
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Originally Posted by eryka View Post
Looks like the Coast Guard is considering doing away with the system, or automating it, or farming it out: USCG LORAN PEIS » Background

I would've thought we'd keep it just to have an alternate to GPS?
Apparently Loran-C isn't seen as a viable alternative PNT source to GPS, unless upgraded to eLoran. The Coast Guard doesn't see benefit in upgrading the system and wants to get it out of their budget.

eLoran has been mentioned as a possible backup to GPS as the FAA moves from radar based surveillence to Automated Dependent Surveillence-Broadcast (ADS-B). ADS-B is a cooperative system in that the aircraft must be equipped and the aircraft must have a PNT source, so it knows and can broadcast its position and vector information. Using ADS-B, if GPS goes out, ATC won't know where you are, unlike with radar where they at least get a "skin paint" return even if you don't have a transponder, so some sort of back up is required. eLoran is one alternative or they could revert to radar (though that negates the benefit of ADS-B's lower costs and maintenence). I'm not sure if the FAA has ruled eLoran in or out as an alternative, but clearly the DHS/Coast Guard would like to either pass Loran to the FAA or shut it down.

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post #3 of 39 Old 02-05-2009
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They have been threatening to shut it down for years but, every time the date gets near, they extend it. Probably someone in some congressmans district has the maintenance contract.

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post #4 of 39 Old 02-05-2009
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They are up grading Loran-C to eLoran. That is going from tubes to solid state circuits.
The manufactors of GPS and Loran-C receivers are starting to combine them together for redunancy in electronic navigation. Which you should have and be doing is using two or more methods of navigation. Along with using Dead Reckoning.
Anyone that depends 100% on the GPS alone is a complete IDIOT!!

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post #5 of 39 Old 02-05-2009 Thread Starter
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Kewel. Thanx, all, any insights appreciated, I caught the vacuum tubes part and the get-it-out-of-our-budget deal, but didn't get the FAA connection. Wow, I actually totally legitmately got to post on SailNet while in the course of doing my day job as a Washington bureaucrat (I think that's a first)

Last edited by eryka; 02-05-2009 at 10:46 AM.
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Originally Posted by Boasun View Post
Anyone that depends 100% on the GPS alone is a complete IDIOT!!
Anyone???? Don't you think it kinda depends on where you are, and what you're doing???? Not a very smart generalization.

My Loran C went away. (I gave it to Sway- last week!)

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Well some of those GPS units in vehicles have had the driver going the wrong way on a one way street...

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And besides... If you GPS goes kaput... Do you have the skills to find your way to port?

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post #9 of 39 Old 02-05-2009
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Quote:
Originally Posted by Boasun View Post
They are up grading Loran-C to eLoran. That is going from tubes to solid state circuits.
The manufactors of GPS and Loran-C receivers are starting to combine them together for redunancy in electronic navigation. Which you should have and be doing is using two or more methods of navigation. Along with using Dead Reckoning.
Anyone that depends 100% on the GPS alone is a complete IDIOT!!
Tell that to Cam.

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Hey stuffit "Get a life"
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post #10 of 39 Old 02-05-2009
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Quote:
Originally Posted by Boasun View Post
Anyone that depends 100% on the GPS alone is a complete IDIOT!!
That is the most ridiculous statement I have heard in a long time.

Wow! The wrong way on a one way street! GPS places you ON that streets lat/long within 100 ft. or so. Anything else is mapping and databases which can have errors and should never be totally relied on...but a Loran using the same underlying mapping would give the same result only not as accurately. Loran won't even WORK far off shore or in foreign countries. I threw mine out a couple of decades ago. That is ALL.

No longer posting. Reach me by PM!

Last edited by camaraderie; 02-05-2009 at 07:16 PM.
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