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China-Japan-Koreas
Bubble Jet from Torpedo 'Likely' Cause of Shipwreck
2010-04-16
After an initial examination of the stern of the Navy corvette Cheonan on Thursday, the military tentatively concluded that the corvette had not been hit directly by a torpedo but broke in two due to a bubble jet created by an underwater explosion. The stern was raised 20 days after the corvette sank in the West Sea on March 26.

The military also speculates that a torpedo attack was a much more likely cause of the explosion than a mine.

"In an initial examination of the Cheonan's stern, South Korean and U.S. investigators found no traces showing that the hull had been hit directly by a torpedo," a senior source at the Defense Ministry said. "Instead, they found traces proving that a powerful explosion caused possibly by a torpedo had occurred underwater. The explosion created a bubble jet that eventually generated an enormous shock wave and caused the ship to break in two."

The investigators are carefully examining the stern, believing that the underwater explosion occurred not below midship but below the center-left. The metal plate on the stern's floor was bent upward and the stern was torn obliquely, about 6 m further on the portside from the aft of the ship than on the starboard. The portside deck was pushed up in an inverted-V shape, showing that a powerful explosion occurred below and sent a shockwave upward.
Posted by:Steve White

#14  Yup, took an engineering job in SF bay area.

Congratulations, bigjim!
Posted by: trailing wife   2010-04-16 22:08  

#13  I believe the Brits did the same with mines on the bottom in relativly shallow water back in '43.
Posted by: Flaper Scourge of the Algonquins4926   2010-04-16 20:56  

#12  Yup, took an engineering job in SF bay area.
Posted by: bigjim-CA   2010-04-16 18:00  

#11  Yep - A naturally occuring version of that is one of the theories explaining the sinking of the laker Edmund Fitzgerald - not a bubble, but simply large waves with a huge trough which exposed amidships, hence, nothing to support the hull and all that taconite.
Posted by: Halliburton - Mysterious Conspiracy Division   2010-04-16 16:57  

#10  Bubble from the explosion, beneath the keel, can lift a ship and break it's back.
Posted by: mojo   2010-04-16 16:33  

#9  Thanks Beldar - I figured as much. I guess my concern would be if the Soviets were sharing their supercavitating torpedo with Kimmie.

And Bigjim - Yes and yes to your comments, but I thought you were in KY? Move?
Posted by: Halliburton - Mysterious Conspiracy Division   2010-04-16 16:30  

#8  Wouldn't this traditionally be considered an act of war?


They don't seem that upset about it.
Posted by: bigjim-CA   2010-04-16 15:27  

#7  I do not think Bubble jet means what you think that it means.

Bubble refers to the cavity in the water which the explosion creates and collapse.

Jet is not the propulsion. Jet refers to the water jet formed by the explosion and collapse of the cavity, creating high pressure directional concentrated hydrodynamic wall of water, aka "jet".
Posted by: No I am the other Beldar   2010-04-16 12:32  

#6  Where did the NORKs get a bubble jet torpedo? I expect they can make bubbles, but neither jets nor torpedos.
Posted by: Halliburton - Mysterious Conspiracy Division   2010-04-16 12:04  

#5  Bubble Video Link
http://www.youtube.com/watch?v=RV8MF-440xg
Posted by: Thise the Rasher1619   2010-04-16 09:17  

#4   Re: Bubble
A modern torpedo explodes underneath the keel, causing a bubble that breaks the ship in half.
Here's a video of an Aussie test
Posted by: Thise the Rasher1619   2010-04-16 09:15  

#3  
"Shipwreck"? "bubble jet"? I think we have some translation issues here...
Posted by: Parabellum   2010-04-16 08:20  

#2  Melting blocks of Methane ice!
Posted by: Skidmark   2010-04-16 00:28  

#1  NET > as of yesterday afternoon, several News sources were still claiming [Nokor] UNDERWATER MINE, NOT SUB TORPEDO???
Posted by: JosephMendiola   2010-04-16 00:13  

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