was it an elite travel adventure or reckless experiment that challenged the laws of engineering? difficult questions being asked tonight as officials and deep sea diving experts speak out on the deaths of five people on a visit to the titanic aboard a vessel built with uncertified technology. tonight oceangate, the company behind that deadly submersible dive, says it is closing indefinitely after the apparent implosion that killed among others oceangate s founder. meanwhile, we are now getting the first information on how the international investigation might take shape as questions continue to focus on the design of the mini-sub and whether it should have been diving to such depths. totom cocostello hasas late new information on the search for answers. reporter: tonight canada s transportation safety board has launched an investigation into titan s apparent implosion on sunday. the u.s. coast guard and ntsb expected to join soon. outside experts are
just heard. the navy has a system that stands for flyaway deep ocean recovery system and it is designed to be flown there. the airplanes that arrived a couple days ago, i had thought that it was already on a ship on its way out there. that s the system with the big cable on a spool that would go down and that would be able to pull the submarine up pretty rapidly, maybe half an hour or an hour once it s found. in the absence of the system, we need a really heavy duty rov which you can get to the mini sub and piggyback it up to the surface. if the rov is found clear of the debris field, that s maybe still possible. but if it s lodged somehow in the propeller or got too close and stuck underneath an over hang i m really quite fearful for the recovery.
camera. some also have side scan sonar. i don t know that this one has it. it would allow it to search a larger area more rapidly. because there is so much other stuff on the bottom you need to put eyes on it to confirm this is the mini sub and not just another piece of the titanic. bill: you know how dark it is down there. can you see more than five feet in front of you? barely. it s pitch black. the midnight zone we call it. but these rovs do have powerful cameras typically designed for research or work under water oil wells or cables. bill: midnight zone is a new one. 20,000 pounds for this submersible. even if you find it, how do you raise it given the weight and the pressure? that was devastating news i
is it, in fact, pieces of the missing sub or is it something else? one would suspect the coast guard would not put out this information if it wasn t also concerned about the nature of the debris field. i ll tell you i ve talked to a lot of experts over the last several days on and off camera and many have raised the concern about the possibility of an implosion inside this mini sub. others have raised concerns how many times this mini sub has gone up and down to the titanic and whether the stress on this carbon type of hull that it has, titanium carbon hull, would that create stress fractures that maybe it would not be able to withstand the pressure of being that deep. the equivalent here of having the entire empire state building standing on top of you is the equivalent pressure at 13,000 feet below the surface of the
squashed. the pressure is immense. even if you get them to the surface, unless there is a leak on the submarine, which would have affected them any away. there is atmospheric pressure. they wouldn t be under any pressure so they wouldn t need a recompression chamber. if they recover, if say, for example, they found the mini sub and they recovered it, they might have divers on board a ship. they put them down to attach it mike i m sorry to interrupt. mike, i m sorry to interrupt you. i want go the back to our correspondent, miguel. miguel? reporter: reporter: everything we know on the ground is that this information that a debris field has been discovered near the titanic website has been met