are these half built houses

[nikki1979uk]

these look like they would be nice to live in

[Felippo]

Hello

Please enable your National Geographic - Magazine layers. Then you will see that these are abalone cages.

By the way, there are 2 other National Geographic-overlays in this region. One shows a seeweed farm and the other an estuary. but as you can clearly see, the National Geographic-overlay doesn't match. It is 150 meters out of its right place.

From the first day of Google Earth I asked myself, how accurate the National Geographic-overlays are, now I can imagine.


Felippo :givebeer:

[nikki1979uk]

thanks, i compleatly forgot to activate theat one, i turn every thing off while i'm looking. silly me :brick:

[SSSALVI]

From the first day of Google Earth I asked myself, how accurate the National Geographic-overlays are, now I can imagine.
Felippo :givebeer:


I don't know how the NG overlays are uploaded.. if they have been uploaded as Lat-Long entries then it is quite possible.

I have certain locations for which we carried out physical land surveys and found the Lat-longs and constructed some equipment for celestial object usages. I can't doubt accuracy of these physical values because we can't use the facility if there is more than a couple of meters of offset.

But if I try to put the lat-long grid of GE ( surprisingly even MS encarta ) for this place I get an offset of almost 2 sec of arc which translates to 60 meters offset at equator.

This observation is consistent for other international locations also for which we have an accurate data base.

Shashi