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Old 01-19-2005, 09:16 PM
fongster fongster is offline
Guppy
 
Join Date: May 2004
Location: OC
Posts: 278
Default Nav chart question

When a chart says, "PA" (position approximate) for a rock, how close are they--off a lot, a little, yards, 1/4 mile...?
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Old 01-19-2005, 09:38 PM
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Yutaka Yutaka is offline
Call me G-Fresh!
 
Join Date: Jun 2003
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Default RE: Nav chart question

I just looked thru my Chapmans, but no qualitative definintion of PA. But if I remember my classes correctly, it means there is not enough independently verified data to chart the exact location. However, there is enough observations to verify the existence of said structure/hazrd/obstruction in the area.

Also worth noting is the less frequently seen PD (Position Doubtful) and ED (Existence Doubtful), meaning the reported observation could not be subsequently verified.

Yutaka
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Old 01-19-2005, 10:02 PM
fongster fongster is offline
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Join Date: May 2004
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Posts: 278
Default RE: Nav chart question

Thanks, YS. I have seen "PD" too but never thought it meant what you said.

On another note, I just completed a new floor board for the bait tank--it's plumbed underneath with the hose coming up the keel so there is nothing to trip over now. I also added some silica sand to the paint so it's non-slip. Feels nice to have a large flat area to fish from now.*

*relative to the boat's size, lol.
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