Sonar Scans News Today

three hours of breaking stories, and checking out the truth behind them. lets start with that massive hunt for the missing submersible in the north atlantic — which is now in a critical phase. fears are growing for the five people onboard the missing vessel, which lost contact, during a descent to the wreck of the titanic. its thought the oxygen supply on board may have run out. but the us coast guard insists it remains focused on finding the crew alive. we were told they were certai...

>> michael mccarthy was on the team that found the sidney, after more than 25 years of searching. he sees eerie similarities in the search for flight 370. >> you have an enormous area where it could be or may not be. you have the similar depth of water. you have similar emotions. >> but the search today has the advantage of technology. if satellite images and search planes can find debris from the plane in time, the flight data recorder should be sending out a signal. but the search for hmas sid...

Points. the british contributing the submarine. is it your understanding that this is largely to try to find those pings coming off black boxes? it was my understanding submarines wouldnt have must have to do in the search until they find debris and started looking for the actual crash zone. yeah, all of these things like the towed pinger locater, the sonar scans that a submarine would have, theyre not that useful until they can find debris and show the proximate area where the plane went down. ...

If that doesnt work, there are a number of sonar options. they can use sonar scans to sort of map the ocean floor. then theres the blue fin, basically a submarine. until a piece of debris is found, its very difficult to use those other pieces of equipment. >> once they do find the debris, they have to then find the wreckage. with air france, it was spread out over eight miles. >> yeah. all right. it appears malaysia is no closer this morning to figuring out just what happened. they are conductin...

To have gone down. >> the sadness onboard, to see those images is going to be matched again if that occurs in this case. >> it looks like it actually sank upright. michael mccarthy was on the team that found the sydney after more than 25 years of searching. he sees eerie similarities in the search for flight 370. >> you have an enormous area where it could be or may not be. you have a similar depth of water. you have similar emotions. >> reporter: but the search today has the advantage of techno...