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Christopher A. Young
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active sonar interferes with wildlife mating etc. whales talk by
making noise and can be drownd out by active sonar
Sounds like a good idea until you think about
how practical it is. Like the crew being distracted
and running into the dock or grounding in a
channel because the alarm is constantly going
off and driving them nuts as they enter shallow water
coming into port, etc.
And then you have the many areas where even
the latest charts don't show current shoaling, etc.
Nope. The whalehuggers had a long running environmental suit
against the Navy seeking a court order to curb midfrequency sonar, the
Navy's preferred method for detecting enemy submarines, on the grounds
the sonar disturbs and sometimes kills whales and dolphins.
It got settled after the Supremes said defense needs trump the
whales, but that wouldn't be a concern with cruise ships.
The navy doesn't want a bunch of extra pings rattling around the 7 seas
either. It would make them much more vulnerable if an errant ping hit
them. It would probably also make it harder
It would also be an added expense to no real gain. Just stay in the
known shipping lanes and you would be good to go.
People thought cybersex was a safe alternative,
until patients started presenting with sexually
The guy on Science Friday today (well, yesterday, Friday), or maybe it
was Terry Gross, said that the ships had depthfinders and electronic
I actually don't know what active sonar is. He didnt' say anything
about it, pro or con.
The typical depth finders and fish finders on boats
are one form of active sonar. They send out a pulse
that gets reflected back by objects, the time delta
giving the depth. There are also forward looking ones
that give images/depths of what's ahead. Whether
they are practical for a ship of that size approaching
shallow water, I don't know.
On Sat, 21 Jan 2012 05:15:00 -0800 (PST), " email@example.com"
Is there inactive sonar?
It turns out he was having dinner with a pretty travel agent when the
ship hit the rocks. But he still waited for his dinner, and after
they finished dinner, she waited with her for her desert.
She said he after that he was on the bridge until 11:45, but of course
the ship continued sinking for hours after that.
I also heard that he said he fell off the deck into the lifeboat.
Anyone hear that?
Also something about a laptop.
They have T-shirts in Italy now saying "Get back on the boat".
They're meant politically also.
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