[alberg30] Depth Sounders Again

[Rap1208 at aol.com]

From: Rap1208 at aol.com

DLS, that is a good location for a depth sounder.  My data Marine is in a a 
water box there.  (actualy, mineral oil) and sealed with a wax plug.  When 
Idriled a hole for the knotmeter on the starboard side, down in the bilge, I 
found it to be about 5/8" thick.
I would espect the hull there to be no more than that, perhaps 1/2".  My 
sounder reads to about 97-99 ft, after that I get a msg signal to indicate 
that the signal is missed.  I only encounter that depth in Lake Huron, or 
MIchigan, and I know where I am when that happens. If you already have a 
hole, you may have to fill and rebuild it before you install the water box.  
My water box is a fiberglass tube, that is fitted and glassed against the 
hull.  It is in a vertical position just behind the drawer, and is about a 
foot or slightly more below the waterline.  so I have about a 1 foot 
"cushion" on the reading, nice to know when the 4' alarm goes off.
Russ Pfeiffer

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