true with these underwater sound as well. australians not using the word pulse but instead an acoustic noise that ship may have picked up. thanks so much, will. appreciate that. i want to bring in sonar expert arnold carr president at american search and survey. mr. carr helped find ss portland in 1989 and was involved in the twa flight 800 recovery. mr. carr that british ship due to arrive at any moment we ll see, at an area where the pulses were detected according to the chinese vessel. we understand their technology may be a bit rudimentary but it had some sort of hydrophones that it just simply dropped into the water. in your view is that high-tech enough to pick up pings this could be flight data from black boxes? i think chinese vessel using