NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: knew where we were, but where are we now?
From: Yanni Nikopoulos
Date: 2006 Jun 24, 08:19 -0400
From: Yanni Nikopoulos
Date: 2006 Jun 24, 08:19 -0400
Starting from the DR. The DR is a position
you want to be (Dead Reckoning) and you think you are heading there
from your known position your heading, distance and
the speed of your boat, taking in consideration the current and the
wind
direction. There is nothing to calculate here.
After the time you spent to get to your DR you take a running fix from one or
two are three Lines Of Position (LOP) and put it on
the chart and you see if your DR was right.
The formula to find speed, distance and time if you
know to of is 60D=ST
(60xDistance=SpeedxTime) you can manipulate that to
what you need.
Hope that helps...
----- Original Message -----From: Guy SchwartzSent: Friday, June 23, 2006 11:35 PMSubject: I knew where we were, but where are we now?This has probably been discussed here before, but hopefully someone will help me out. I'm trying to find the formula for caculating your DR after traveling from a know position.For instance:Last Fix40 deg 07 min N44 deg 37 min WCourse 090distance traveled 56.88 NmNew DR?It would be a big help to me if someone that knows the formula could incorparate the above example so I could follow along.Thank you,Guy
