It would seem to me that any party seriously wishing to prove or disprove
any claims relating to the capabilities of this system only has to take a
half decent sonar and a ROV to the positions quoted in the reports and
verify what is on the seabed, indeed this statement is made on the first
page of the KDLS website. Identification of Sydney should be fairly
straightforward and categorical

In the scant information available on that site I immediately see a
resemblance to another obscure remote sensing instrument.  Its proponents
similarly claim it can detect materials on an elemental basis and that it
can identify substances, when results are assessed against a control, to
such a degree that tree species and objects could be identified in buried
shipwrecks.  This instrument can penetrate seawater, sediments and solid
geology.   The principle of the KDLS system sounds fundamentally identical,
with the implication that it identifies materials from interpreting
resonance of structures at an atomic level.

The other similarity is that invitations to operate the equipment over a
known shipwreck target so that an empirical assessment can be made have not
been aquiesced.

Whilst those untutored in the physical sciences might view this technology
as science fiction or the work of charlatans the science it is based on is
quite sound and the potential is most definitely real.  Probably what we are
seeing is the early pioneering of instruments that will be refined and
developed to become more commonplace and understandable.

Unfortunately those doing this work tend to be labelled as "nutters", we
used to be more polite and call them "boffins". However they certainly do
not gain any credibility from archaeological professionals by the high
profile unsubstantiated claims made, such as being able to identify
propellors,bones, oil fuel and boxes of silver in the hold or by the
associations they make with other organisations of questionable
qualification.

Personally I don't believe that the Kormoran or any treasure has yet been
found but I would not be too quick to entirely dismiss these instruments,
they do locate anomalies, though I think the interpretation of the results
so far on shipwrecks is fuelled more by pathological optimism and enthusiasm
than a scientifically controlled appraisal.