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Australia, make hay while the sun shines. we need to get all of the data we can. by getting more data, we will be able to compress this area in to a much smaller area where we do the very difficult and challenging search with the autonomous underwater vehicle. bear in mind, we heard about the silt. the silt on the bottom will complicate that search. sometimes silt can be, you know, tens of meters thick. it s a very difficult environment. so, you know, the more effort we put in to location of where the transmission is coming from, the more certainty we will have that we will find something on the bottom of the ocean. ....
Underwater vehicle it operates at walking pace. okay. it has a relatively narrow swath and it takes days and days and days to cover even an area like this. in fact, this area you see here would take it we d be talking in terms of weeks, not just days. so the more time we spend getting the locational data the better off we will be when we come to the underwater search. remember what i said in my brief. essentially, it takes six times longer to cover the same area with the underwater submersible as it does with towed pinger on the surface. how long will you wait from the last ping you receive, or the last signal you receive, which as you said you last ....
They are all boston strong and we salute them. i m anderson cooper. good night. i hope you were with us during the last hour and you were inspired as watching adrianne haslet-davis story. she is truly boston strong. one thing she wanted to get across to everyone watching is something her grandmother said to her as a kid it is okay to not be okay sometimes. but adrien is doing okay. and she has a long road ahead of her as do many of the survivors but we will root for her along the way. if you are just joining us, we expect a news conference any moment from australian authorities on the search for flight 370. it is 11:00 a.m. in the search area. the newly refined and somewhat ....
That could also hamper things. it is not clear what sort of time table we re looking at, rosemary. yeah, they seem to be talking in terms of days, which is quite an improvement. erin mclaughlin joining us live from australia, many thanks to you. let s get more on this breaking news from u.s. navy captain matthews. he joins us on the line from perth, australia. what do you make first of all on this development with the two additional pings being detected and the search now desperate ll being narrowed. well, it is certainly encouraging to pick up the transmissions from what seems to be a man made device in the general area that we picked it up before. certainly encouraging to be able to detect it again. but we re working to continue to refine the area where we think the beacons might be. where the sources of transmissions might be from so ....
However, it is still a pretty large area when you re talking about the sonar searches. and one rule of thumb is it takes me about six days with the bluefin-21 to cover the same area i can cover in a day with the towed ping locater. and that is key, because many may wonder, the last signal was four minutes, the last five, the very first signal was two hour, 20 minutes, why not deploy this bluefin vessel while they can detect the signal and triangulate it from there? the bluefin-21 does not detect that signal. the bluefin-21 uses an active sonar to transmit and receive signalings. from either side you re talking about 300 meters detection. so the area that it can cover is much reduced compared to the towed pinger locater. now we are concerned that the ....