I posted this a while back but we have new members now....

This is a bridge piling that I captured using the 800kHz beam of my 1197...

Remember now that the DI (in a HB SI unit like my 1197) is rendered from the SI crystals in the xducer...
Also remember that the 800kHz only covers 135 degrees (not all the way to the surface like the 455kHz 180 degree SI beam)...therefore the upper portion of the bridge piling was not physically in the SI beam ...so the snapshot shows the upper part of the piling as absent...



Rickie