CNN CNN Newsroom March 25, 2014 19:06:00
The bottom of the ocean. so if youre in the southern indian ocean, you have to get censors like this all the way down near the bottom of the ocean to generate a high resolution map. >> reporter: in this case, how deep are we? >> were in 40 feet of water right now and were map prosecuting the veing from the vessel. you have to get this much further down. >> reporter: and you cant do it fast. youre talking about going through miles and miles of sea floor. >> you have to build this map up. its very...
Source: archive.org