CNN CNN Newsroom April 13, 2014 00:48:00
The tides, the current, and so on. so you have to try to plan as much as you can but then tailor it when you see what the actual conditions are. and that's important. another point is about the power of the pingers. the power of the pingers is approximately, i believe, a tenth of a watt and it's pulse sod that the battery life is extended and we're only really a miles from it and we're receiving echos from different parts because of the thermal layers. >> can you tell a sorry about how sound travels really quickly? okay. my producer is telling me to do it after break. paul, don't go anywhere. ...
Source: archive.org