Dead-reckon

[vdr1981]

Originally Posted by mirage3000

Hi!

Can anyone confirm that if I manualy draw navigation point and after an hour I ask the navigator for dead-reckoning, he will use exactly that waypoint as the basis for his calculations?

P.S. I'm of course talking about real-nav (WoS)

Thanks!

Confirmed! But, certain error will be introduced too, 15% by default actually...You can tweak navigator DR error with TDW user option file editor/viewer... I agree that 15% is slightly higher than it should be, something like 5-10 % would be much better...

You can test this by adding manual nav point somewhere on the map (over land for example) and asking navigator do perform dead rec. some time later...
On the other hand, celestial fix will always be calculated somewhere around your true location (If there is no heavy fog or clouds of course).