Depth of VH-NGA
These are some recent questions on Ben's blog concerning the depth of the wreckage.
Footage obtained by a remote vehicle shortly after the crash showed the wreck lying on relatively flat seabed at a depth of 47-48 metres.
However locals were apparently willing to use a boat to tow it into shallower water (approximately 30 metres). For some reason the ATSB believed this tow to be too hazardous and too costly.