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Subject: TWL: Re: TWL Are radars the most important instruments?
From: Arild Jensen (elnav@XXX.XXX)
Date: Sat Aug 17 2002 - 13:07:15 EDT
John Baker wrote:
> I knew someone would pick up on this thread. I am going to have to
> agree with Larry. It all goes back to my theory on the navigational picture or
> puzzle that you try to create with the data given.
> Another thing we need to look at, the application: the original poster is
> on a Nordhavn 46 doing "coastal" cruising along the coast of a continent.
> Whereas,
REPLY
As John says, it all depends on where you boat.
An acquaintance boats in extensive marshlands where the water channel is
surrounded by acres of weeds standing in water deep enough to float the hull.
But the weeds would choke the prop.
So to him the most important navigation tool is a search light!
The featureless marshland does not give a good radar picture, the depth
sounder wont warn him of the weeds until too late. GPS is useless since the
chart is only showeing green area anywats and a dotted line for the
approximate channel.
BTW, on some canals, the tugs use twin 10" searchlights to pick out the
reflectors up to half a mile ahead. Works better than radar.
regards
Arild
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