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Missing Indonesian submarine found broken into at least 3 parts
nbc ^ | https://www.nbcnews.com/news/world/missing-indonesian-submarine-found-broken-least-3-parts-n1265210

Posted on 04/25/2021 10:59:24 AM PDT by BenLurkin

A missing Indonesian submarine has been found, broken into at least three parts, deep in the Bali Sea, army and navy officials said on Sunday, as the president sent condolences to relatives of the 53 crew.

Rescuers found new objects, including a life vest, that they believe belong to those aboard the 44-year old KRI Nanggala-402, which lost contact on Wednesday as it prepared to conduct a torpedo drill.

Margono said on Saturday that a sonar scan had detected a submarine-like object at 2,800 feet, beyond the Nanggala's diving range.

Indonesia had five submarines before the latest accident: two German-built Type 209s, including Nanggala and three newer South Korean vessels

(Excerpt) Read more at nbcnews.com ...


TOPICS: Military/Veterans
KEYWORDS: indonesian; submarine
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1 posted on 04/25/2021 10:59:24 AM PDT by BenLurkin
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To: BenLurkin

“to those aboard the 44-year old KRI Nanggala-402”

That is an old submarine. Lots of time for a stress riser to form in the pressure hull.


2 posted on 04/25/2021 11:03:06 AM PDT by Fai Mao (It is time, past time and almost too late.)
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To: BenLurkin

What would cause this to break apart??


3 posted on 04/25/2021 11:03:15 AM PDT by spacejunkie2001
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To: spacejunkie2001

Limpet mines...courtesy of China?


4 posted on 04/25/2021 11:14:16 AM PDT by moovova (Yo GOP....we won't forget.)
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To: spacejunkie2001

I imagine something went bad and caused her to sink below crush depth.


5 posted on 04/25/2021 11:17:26 AM PDT by dainbramaged ( Zulus to the Southwest - thousands of 'em.)
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To: spacejunkie2001
Aargh! The skalawags that caused me Davey Jones locker to go into her watery grave me lad!

(Puffs on tobacco pipe and adjusts eye patch)

6 posted on 04/25/2021 11:22:10 AM PDT by Extremely Extreme Extremist (Free Republic: The Internet's 1st social media platform. Since 1996.)
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To: moovova

7 posted on 04/25/2021 11:24:03 AM PDT by ex91B10 (Just because you can doesn't mean you should. )
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To: spacejunkie2001
What would cause this to break apart??

Something in the hull failed, or given that it was about to do a torpedo firing drill, something in the breech of the torpedo tube failed and admitted water into the hull. Get enough water inside a submarine- or any ship- and it starts sinking. In the case of a submarine it doesn't take much, because they're designed to be close to neutral buoyancy anyway.

Then, once it sinks deep enough, the hull (if not completely filled with water, which of course takes time) will implode violently once water pressure overcomes its strength. That implosion has been seen in other steel-hulled shipwrecks to be more than enough to break vessels into multiple pieces. Additionally, impact on the sea floor of a sinking vessel has been seen to break hulls into large pieces.

Looking up the sub's specs on good ol' wikipedia and using a cylinder-shaped surface area number derived from its length and beam, at 2800' ft depth the total amount of force trying to crush the hull (inward pressure integrated over hull surface area) is approximately 2.65 billion pounds . As strong as as a ship or submarine hull is, that kind of force can result in pretty spectacular structural failures, like a steel submarine getting crumpled so violently it ends up in multiple pieces...

One can only hope the crew didn't suffer long after the initial failure. I suppose one very dim positive note about a sub that hits crush depth and fails violently is that if anyone was still alive and conscious at that point, they were spared the experience of drowning [the implosion process would have taken less than a blink of the eye].
8 posted on 04/25/2021 11:37:00 AM PDT by verum ago (Some people must truly be in love, for only love can be so blind. Too cynical..?)
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To: spacejunkie2001

It was a bit old, was retrofitted awhile back. Perhaps something was missed or improperly done during that process.

I think they bought it from Germany.


9 posted on 04/25/2021 11:40:20 AM PDT by SaxxonWoods (Any comment might be sarcasm, or not. It depends. Often I'm not sure either.)
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To: All

thanks to all for the responses. It sure is sad


10 posted on 04/25/2021 11:57:54 AM PDT by spacejunkie2001
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To: spacejunkie2001

My thoughts are always with those in peril on or under the sea. Being grounded deep is a terrifying experience in a sub. And that’s all I wanna say about that except, by the grace of God, I and about 120 other swabs survived.


11 posted on 04/25/2021 12:32:37 PM PDT by PerConPat (A politician is an animal which can sit on a fence and yet keep both ears to the ground - Mencken)
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To: BenLurkin

...a sonar scan had shown the submarine at a depth of 850 m (2,800 ft), while its crush depth was presumed to be 500 m (1,600 ft).

I still suspect that many other submarines knew it was a goner, because a crush depth implosion is noisy and distinct enough to be heard on the other side of the world.


12 posted on 04/25/2021 12:46:01 PM PDT by yefragetuwrabrumuy ("Poor kids are just as bright, just as talented, as white kids." - Joe Biden Aug 8, 2019)
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To: spacejunkie2001

Krakken?


13 posted on 04/25/2021 1:15:28 PM PDT by Honest Nigerian
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To: PerConPat
 
 
They remain on patrol.
 
 

14 posted on 04/25/2021 1:29:22 PM PDT by lapsus calami (What's that stink? Code Pink ! ! And their buddy Murtha, too!)
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To: BenLurkin

1978 movie trailer “Gray Lady Down” https://www.youtube.com/watch?v=aQewlH-cggo


15 posted on 04/25/2021 1:43:47 PM PDT by cva66snipe
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To: lapsus calami

Roger that...


16 posted on 04/25/2021 1:45:55 PM PDT by PerConPat (A politician is an animal which can sit on a fence and yet keep both ears to the ground - Mencken)
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To: cva66snipe

“Thank God and General Dynamics.” Heston as the Captain.


17 posted on 04/25/2021 1:48:09 PM PDT by mad_as_he$$
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To: mad_as_he$$

Yeap great movie. I sent reply private by mistake sorry.


18 posted on 04/25/2021 1:50:54 PM PDT by cva66snipe
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To: PerConPat; lapsus calami

When they recovered the HL Hunley all eight crew members were at their stations.


19 posted on 04/25/2021 1:59:17 PM PDT by outofsalt (If history teaches us anything, it's that history rarely teaches anything.)
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To: BenLurkin

Maintenance and training.

Maintenance and training.

Or, find yourself at the bottom of the sea.

No serious design flaws in the Type 209, and none has broken into pieces before.

It appears they dove too deep.


20 posted on 04/25/2021 2:03:24 PM PDT by Mariner (War Criminal #18)
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