|
|
From: Ron Rogers (no email)
Date: Thu Nov 04 2004 - 20:09:37 EST
Most of the posts speak of using a single electronic aid and pilots not
looking out the window. Yes, there are mariners like that as there are
mariners who fail to pay attention to their electronic aids and compass and
run into trouble.
In narrow channels, I'd be up on the flybridge looking at the markers and
checking my depth sounder. Here on the Chesapeake we live by the depth
sounder as we travel up rivers without buoys. We can afford to do that
because we navigate over mud with a few exceptions.
If you have integrated electronics you can augment your senses with several
ways to check ground truth. For example, if you connect your GPS to your
radar, you get a square or lollipop where your next target is. Are you
getting a return inside the square? Is it within visual range? Can you see
it on the azimuth that your GPS and/or chartplotter suggests? Is the channel
bounded by terrain that gives a return? Does that agree with what you see?
Does your chartplotter agree with what you see? Does the depth agree with
the paper chart?
You have to use all your senses and all the tools available to you. The
emails (with Arild as the perennial exception) are somewhat myopic.
Ron Rogers
Willard 40 AIRBORNE
Lying Annapolis
___________________________________________________________________________
|| The Live-Aboard List : send a "subscribe" or "unsubscribe" request ||
|| in body of message to: ||
|