Re: Leg 56
Subject: Re: Leg 56
From: Ed Falk (Ed.Falk@XXX.XXX)
Date: Thu Jul 15 1999 - 17:21:00 EDT
> My problem with these multi-day legs is that I've always worked out
> shorter leg DR problems graphically on a chart. I can now easily
> generate charts for anywhere in the world thanks to the chart plotting
> software this group has led me to, but the scale isn't large enough to
> work out the solution graphically. Are you using some sort of distance
> formula or a table somewhere (or a Nav. calculator) to arrive at the DR
> position. I've only done day-long coastal cruises but I always figured
> you would still work out DR positions over a shorter elapsed time, if
> for no other reason then that the wind conditions would vary enough to
> give different cruising speeds and even headings.
>
> I'm not complaining, mind you, just that I could use some help in
> working the long-leg DR problems. What's the trick?
I'd like to know that too. I sometimes do it graphically
on a makeshift chart, and sometimes mathematically using
crude trig, but afterwards, I have to skip ahead to the answers
and use the official DR solution to finish the problems.
-ed falk
