Originally Posted by onetrack
The faults discovered may have led to a re-assessment of the interpretation of the pings recorded, that then placed serious doubt on what was actually recorded.
I think you may well be confusing the ULB pings that were detected by the Towed Pinger Locator and recorded, with an entirely different operation being performed by the Bluefin-21, i.e. a side-scan sonar operation over the seabed for signs of any wreckage.
A by-product of this operation, is that the bathymetric data obtained will be far better than anything previously obtained over the Zenith Plateau.