[Rhodes22-list] GPS/Depth Sounder Questions

[David Bradley]

Thanks, John.  Good tip.

I agree, the most likely use for depth sounder is for anchoring which is a
certainty in the San Juans.  I've also heard some pretty nasty stories about
sudden fogs in this part of the world.

I'm looking at the Garmin model that has chart plotter fish finder together.

Dave


On 7/2/07, John Lock <jlock at relevantarts.com> wrote:
>
> At 04:02 PM 7/2/2007 -0400, Michael D. Weisner wrote:
> >Great toy for people to watch but virtually useless on a craft that
> >drafts 2 feet with a kick up rudder and centerboard."
>
> I have found knowing accurate depth when anchoring to be
> helpful.  It's good to know how much rode you need to pay out for a
> good hold.  In my case, my depth meter is an old Hummingbird fish
> finder, so I get to see bottom contour and detail as well as great
> indications of all those fish I'm not catching!  It can also visually
> indicate if there is any bottom debris (like submerged trees) left in
> the lake that might foul the anchor or rode.
>
> >behind the cockpit drain fitting.  You can test it in the water by just
> >placing the transducer at this point and placing a fender or suitable
> >"wedge" to put downwards pressure on the transducer and power up the
> unit.
>
> The sonar manufacturers recommend testing "shoot-thru" installations
> by placing the transducer in a plastic bag filled with water.  Tie it
> off and place the bag in the laz and give it a try.  Any air space
> between the transducer and the hull surface (however minute) will
> throw off readings.  The water-filled bag will conform pretty tightly
> to the hull.  If you get a good test with that, then epoxy it in
> place and you're all set.
>
> Cheers!
>
> John Lock
> ~~~~~~~~~~~~~~~~~~
> s/v Pandion - '79 Rhodes 22
> Lake Sinclair, GA
> ~~~~~~~~~~~~~~~~~~
>
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>



-- 
David Bradley
+1.206.225.7793
dwbrad at gmail.com