The United States Navy is very good at picking up sonar readings from submarine motors in big expanses of water. But it isn't as easy as it seems, there is a lot of noise going on in many parts of the world, such as the Gulf of Mexico for instance. It is hard to isolate the sounds of the submarine, from the sounds of equipment and other diesel motors which are vibrating on top of oil platforms.

There was recently some interesting news in the international intelligence realm, which could also be considered conspiracy theory, that a North Korean cargo ship on its way to Venezuela went off course and came within 250 miles from the BP oil rig which caught on fire and caused this huge eco-disaster oil spill. It was further asserted that this North Korean cargo ship offloaded a North Korean attack submarine.

And that this was an act of war by North Korea. Of course something like that is totally plausibly deniable, and therefore it disappeared from the world news, almost as quickly as it was seen. One has to ask if that was possible, the answer is yes it is possible. It is probably unlikely or improbable, but possible nevertheless. If this is the case, then perhaps that's why the United States Navy had so many ships out in the Gulf of Mexico helping the oil spill, maybe they were actually looking for something else.

Would they be able to find a sonar signature from a diesel powered submarine from North Korea in the Gulf of Mexico? It's hard to say, the submarine may have gotten away by then. Or it may be waiting to do even more damage later. It was further asserted in the conspiracy news report that the people aboard the submarine were part of a North Korean suicide squad. In other words, after they did the attack, they were considered expendable, and thus they may never be found again. Or maybe the sunk the sub and came ashore somewhere?

Let's face it finding a Single submarine in the entire Gulf of Mexico is harder than you think, and there are lots of places to hide in the varying depth of water, in different places. But if anyone can find a single submarine in the Gulf of Mexico, whether it is Russian, North Korean, or some other nation, it would be the United States Navy which was able to find it. And if they did, the chances are pretty good we'd never know about it.
Perhaps this sounds like a Tom Clancy novel to you, but often real life is stranger than fiction.

[link to ezinearticles.com]