Subject: DR practice
From: (JAXAshby)
Date: 07/18/2004 17:31 Pacific Standard Time
Message-id:
One
reason straight DR in zero visibility may be frowned on with planes.
no, the reason it is illegal is that you can not know where you are. period,
as in can not.
DR in a boat is okay when you are hundreds of miles from any rocks. It is
not
okay when there is anything around to hit.
In all the years you've harped on this subject, it's become painfully clear you
have not and can not grasp the basic practices of "DR".
You've read somplace that the term should only be ded reckoning and that it
only involves speed,time, and heading, and will go to your death bed "knowing"
that anything else is sacrilege.
Problem is, most who spend any time on the water have learned to use other
things to help improve their "DR" plots so that they can safely navigate where
you would never tread.
Problem is, these things don't fit in your narrow view of DR, so you can't
accept them as being DR or being useful and trying to explain these things to
you is a waste of time as you can't seem to comprehend them or make use of
them.
In reality, you need to do or watch someone do these things, so you can learn
how to do them but odds of you ever doing that are slim to none.
Don't waste your time responding, as I know you will not have understood the
point being made.
Shen
PS recreational boats regularly hit rocks even with gps