View Single Post
  #12   Report Post  
posted to rec.boats.cruising
Larry Larry is offline
external usenet poster
 
First recorded activity by BoatBanter: Jul 2006
Posts: 5,275
Default Should I learn celestial navigation before doing circumnavigation ?

wrote in :

because
GPS devices don't work that well in the middle of the
ocean and can malfunction if they get wet, etc.


Nonsense, pure nonsense. GPS runs on POLAR ORBIT, low earth orbit
satellites....not geostationary like XM with a certain area footprint.
The footprint of one satellite is a mere 150 miles under it...but there
are so MANY satellites in the huge constellation that there are always 8-
12 above the horizon ANYWHERE ON THE GLOBE, including the middle of any
ocean. The birds pass overhead and another bird comes up over the
horizon to replace it.

Celestial Navigation, while quite romantic and "salty", are no longer
necessary for worldwide navigation.

Larry
--
Search youtube for "Depleted Uranium"
The ultimate dirty bomb......