NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: How Many Chronometers?
From: Byron Franklin
Date: 2009 Sep 22, 08:25 -0700
From: Byron Franklin
Date: 2009 Sep 22, 08:25 -0700
Yes,Most the Navy has a very electronic bridge,and uses it most the time, but, the magnetic compass on board is called " the standard compass" every half hour and every change of course regulations require a compass check between the gyro and the magnetic. On the Intrepid, I do remenber loosing gyro and steering the standard. The idea may be if you are in far deep water, do you want a electronic man or a navigator with you to take over in Emergency. On Sep 18, 11:01�pm, Lu Abelwrote: > I wonder if this is current data or "the way we used to do it." � My > impression is that most US Navy ships have highly electronic bridges > these days. � In fact, nuclear submarines go underwater for months at an > end with NO surface contact; they are totally dependent on electronic > navigation (specifically, an inertial guidance system) and I understand > that when a sub resurfaces after 60 or even 90 days it's within feet of > the location its nav system is giving. > > As far as EMP is concerned, most military electronic systems are > supposed to be EMP-proof. � �And there's always the option to seal a > couple of Garmin GPS's in a metal container as a backup system. > > > > Apache Runner wrote: > > That's interesting to know. � Do you know the reason why? > > > My own speculation is that they want to maintain a completely > > electronic-free means of navigation under the possibility of some > > extreme situation arising. � �Perhaps in the event of a nuclear EMP?- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---