NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Turning Off the GPS
From: John Manson
Date: 2006 Apr 5, 10:18 -0400
From: John Manson
Date: 2006 Apr 5, 10:18 -0400
I have experienced an increase in interest for more functions in my Palm program. Over the past 5 years there has been an increase in the use of celestial by the Navy. Some of my customers have requested the ability to correct their Gyro compasses by sights. I have added these features and through the conversations with many of them I get the feeling that they take many sights a day. They also asked for the ability to determine a fix based on multiple sights. So it appears that the Navy is prepared for a GPS reduction in service. The ships that I have been dealing with are all out of port. Before 911 it seemed that if they did one sight a day that was a bonus. Anyone else hear about an increase in Training on Celestial with the Navy? John -----Original Message----- From: Navigation Mailing List [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM] On Behalf Of Gordon Talge Sent: Wednesday, April 05, 2006 10:10 AM To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM Subject: Re: Turning Off the GPS Well, I don't know. Who would have thought that "they" could bring down the World Trade Center. Moreover, Russia and China could help turn off the GPS as a kind of "sticking it to the man" act. The Soviets had massive air superiority in Afghanistan in the '80s and we, the US gave the Afghans "Stingers" as a way of a kind of payback for Vietnam. The Afghans could have never come up with the Stingers themselves. BTW, there are no doubt unused Stingers floating around. Wonder where they are, and who has got them. Welcome to the 21st Century where some guy in a cave 10,000 miles away with an AK has a nation of almost 300 million people freaked out. The whole point was though, that for most people, saying that they have Celestial Navigation as a backup to GPS, is really not valid, because to be good at Celestial Nav you have to practice a lot. Most people don't. I met a guy that sailed from Gib to Barbados with only GPS. Didn't even know or carry any Cel Nav stuff. I asked him what brand of sextant he had, and he told me he didn't even own one! The time to learn it is not at sea when your GPS dies. -- Gordon PS: Kind of like my high school students trying to learn Geometry while taking the Semester Final. > With all respect, Gordon, it would take a lot more technology than the > terrorists have to turn off GPS much less to make it give incorrect > positions. GPS uses satellites. One would need satellite-killer > missiles to "turn off" GPS. Only two or three countries (USA, Russia, > China?) have the technology (which, BTW, includes the technology and > infrastructure to track and identify the target before saying to the > missile "go get 'em"). To make GPS give the wrong position would > require taking over the US's GPS control centers and I'm sure the US > military has put a lot of thought and effort into preventing that. > -------------------------------------------------------- This email communication is intended as a private communication for the sole use of the primary addressee and those individuals listed for copies in the original message. The information contained in this email is private and confidential and If you are not an intended recipient you are hereby notified that copying, forwarding or other dissemination or distribution of this communication by any means is prohibited. If you are not specifically authorized to receive this email and if you believe that you received it in error please notify the original sender immediately. We honour similar requests relating to the privacy of email communications. Cette communication par courrier electronique est une communication privee a l'usage exclusif du destinataire principal ainsi que des personnes dont les noms figurent en copie. Les renseignements contenus dans ce courriel sont confidentiels et si vous n'etes pas le destinataire prevu, vous etes avise, par les presentes que toute reproduction, transfert ou autre forme de diffusion de cette communication par quelque moyen que ce soit est interdite. Si vous n'etes pas specifiquement autorise a recevoir ce courriel ou si vous croyez l'avoir recu par erreur, veuillez en aviser l'expediteur original immediatement. Nous respectons les demandes similaires qui touchent la confidentialite des communications par courrier electronique.