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Search took 0.00 seconds. Search: Posts Made By: barnakiel
Forum: Navigation 03-08-2014, 09:07
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

And I got asked by another member:

"Alt without a sextant."

Grab your smarthone or any other digital camera and snap a picture towards the sun (use a filter).

Try to hold the camera 90degs...
Forum: Navigation 03-08-2014, 09:02
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

I got corrected:

The second WPT is at dec, not at alt!

Alt is what will get compared to dist to obtain our towards or away.

barnakiel
Forum: Navigation 01-08-2014, 16:05
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

*grin* As long as we know how much we drift, we are fine!

b.
Forum: Navigation 01-08-2014, 15:58
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

Did you really expect a free lunch?

BTW I have an even worse piece of news for all our plotter potatoes: one does not need a sextant to get the altitude.

I am truly sorry. ;-)

b.
Forum: Navigation 01-08-2014, 09:10
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

This is not what I have seen on our route. We met plenty of sailors and I noticed they were either very proficient with everything (sextant or gps or diesel engines) or else they were pretty ignorant...
Forum: Navigation 01-08-2014, 09:00
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

And the time does not have to be all that accurate. We use a plain Casio that I set exact on departure, then update from gps signal once a week. I know how much ahead or late it gets per week then.
...
Forum: Navigation 01-08-2014, 08:55
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

A plotter that loses its GPS capability will still deliver all other functions, e.g. route calculations.

Now imagine you enter one WPT1 at your EP.

Now imagine you enter the other WPT2 at...
Forum: Navigation 01-08-2014, 06:53
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

This is in line with my observations too.

Most sailors, as well as any other consumers of technology, will fall into one of two categories:

- those who know how to use a sextant, and will also...
Forum: Navigation 01-08-2014, 05:16
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

Master,

- some do some do not, chipset dependent (I believe),
- also, not all software decodes glonass data,
- any proof they are not "gps OR (gps AND glonass)"?

The second doubt after...
Forum: Navigation 26-07-2014, 07:59
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will happen to you when gps goes down

I know how to place a spanner next to a compass.

Now what?

Why jam your own gps?

You are talking nuts, mate.

b.
Forum: Navigation 26-07-2014, 06:55
Replies: 322
Views: 40,161
Posted By barnakiel
Re: What will Happen to you when GPS goes Down

If the constellation goes down:
- we can use GLONASS,

If our main unit goes down:
- we switch to another, this is a 30'' job in our case,

If all our units go down (e.g. lightning):

deep...
Showing results 1 to 11 of 11

 
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