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Search took 0.00 seconds. Search: Posts Made By: belizesailor
Forum: Navigation 22-09-2018, 07:37
Replies: 177
Views: 17,144
Posted By belizesailor
Re: Considering these ideas of navigation.. What is your opnion on it?

I did not intend to imply you could derive accurate time from LAN...thats why I said "approximate"...certainly not accurate enough to use for celestial nav purposes.
Forum: Navigation 20-09-2018, 06:46
Replies: 177
Views: 17,144
Posted By belizesailor
Re: Considering these ideas of navigation.. What is your opnion on it?

A plumb line could certainly be used to determine LAN (Local Apparent Noon) as can a sextant.

From LAN you can derive latitude and of course approximate time.
Forum: Navigation 20-09-2018, 06:42
Replies: 177
Views: 17,144
Posted By belizesailor
Re: Considering these ideas of navigation.. What is your opnion on it?

Could have been. This was a long time ago...the older units' software was not very robust...took them a long time to acquire under normal circumstances...changing the constellation would likely...
Forum: Navigation 19-09-2018, 09:14
Replies: 177
Views: 17,144
Posted By belizesailor
Re: Considering these ideas of navigation.. What is your opnion on it?

Yes, I understand SA...the event was just during that era. I have no official proof the civilian signal was turned off or degraded, but none of the GPS units aboard (two fixed mounts plus most crew...
Forum: Navigation 19-09-2018, 06:46
Replies: 177
Views: 17,144
Posted By belizesailor
Re: Considering these ideas of navigation.. What is your opnion on it?

Celestial Nav is a gratifying skill to master, but the odds of really needing it today are slim. This is especially true given that multiple countries have launched GPS satellites and chipsets are...
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