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Kron161
Joined: 14 Mar 2001
Posts: 480
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 Posted: Sat Dec 11, 2004 4:54 pm Post subject: |
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| Torgen wrote: | My father was a contractor visiting a US attack sub in Groton in the 70s, and the destroyer across the river went active andwas pinging the sub's hull constantly. My dad said it made a huge BONG! sound and damned near made everyone deaf. The CO made a *personal* visit to the DD, and the pinging stopped soon after.
Of course, the modern sonar are surely far more powerful and focused than the WWII era ones, and your usually not THAT close to one! :doh: |
Very true: Modern sonars are so powerful and the amount of energy released so outrageous that when there is a ping, the layer of water in contact with the sonar dome evaporates. (even on submarines at high detph)
For years Greenpeace had been blaming without any proof the mass beaching of whales to possible sonar emissions in vicinity of those animals. That is until 2000, in the Bahamas, when a widely known US navy sonar test during a ASW exercise resulteed in the beaching of sixteen whales. Seven of which were found dead by decompression sickness in internal organs. The Navy accepted blame in a report published in the Boston Globe on 1/1/2002. 
Just in case, do not swim near any military active sonar!! :hmm:
Last edited by Kron161 on Sat Dec 11, 2004 5:31 pm; edited 1 time in total |
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Lanzfeld
Joined: 10 Jan 2002
Posts: 1256
Location: Reston, VA
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| Posted: Sat Dec 11, 2004 5:07 pm Post subject: |
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| I am no "tree-hugger" but that is a horrible story. |
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