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Old 08-12-12, 07:29 PM   #16
gap
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Originally Posted by Sartoris View Post
While we're on the topic of real navigation, how do you guys use real navigation in those situations when you're planning an attack? The other day I asked my navigator to give me my position using dead reckoning, but since his calculation was all wrong (and kept getting worse) I was unable to plot my attack correctly. I understand that using celestial navigation is more accurate, but let's say you're plotting an attack in bad weather and you want to plot with just the hydrophone and the map, but you can't get the navigator to tell you where you are: what do you do then?
If you are using the four bearings method, the first 3 bearings are plotted relative to a fixed point representing your current position. No matter where you put this point on map, as long as the plotted bearings are correct, and the time interval between them is constant.

The 4th bearing is a bit trickier: you get to change your position before plotting it. Again, your actual map coordinates are not important. What matters is knowing your current position relative to the first point. You can plot the new position with a reasonable margin of error with no need of a celestial reckoning, as long as you travel along a constant route and keeping a speed as constant as possible, for a measured number of minutes. Once you have your new position marked on map, you can plot the last bearing to your target, as you did with the previous ones.

Eventually, you can refine your calculations once you get the target within visual range, using stadimeter, RAOBF or any other measuring method that doesn't require map plottings.

Last edited by gap; 08-12-12 at 07:57 PM.
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Old 08-13-12, 02:41 AM   #17
Sartoris
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Thank you very much, gap! I did not know that you could use the 4 bearings method like that.
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Old 08-13-12, 04:36 AM   #18
gap
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Thank you very much, gap! I did not know that you could use the 4 bearings method like that.
My pleasure
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Old 08-17-12, 02:04 PM   #19
Targor Avelany
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Originally Posted by sober View Post
Has anyone actually used real navigation with trevally auto script . You get the inacurate bearings with dead reckoning . The more dead reckoning your navigator does in a row in bad weather without celestial the worse it gets . I have been lost many times in fog trying to reach home port . Also its interesting that if your navigator gets injured then its real fun , not .
I alwayss thought that it is actually pretty realistic this way.

Annoying and hard - yes, but definately realistic. That is actually one of the reasons that I do try to stay at one place when the Navigator does one of the celestial fixes at night: getting him good read on celestial fix allows for better dead reckoning.

Bad weather always sucks, though...
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