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Indonesian Rescuers Recover Debris Believed to Be From Missing Submarine - Official
US News & World Report ^ | April 24, 2021, at 5:18 a.m.

Posted on 04/24/2021 7:27:57 AM PDT by BenLurkin

The Indonesian navy chief of staff said a scan had detected the submarine at 850 metres (2,788 feet), well beyond its survivable limits. The submarine, which disappeared as it prepared to conduct a torpedo drill, is designed to withstand a depth of up to 500 metres (1,640 ft).

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


TOPICS: Military/Veterans
KEYWORDS: china; debris; indonesia; indonesian; jihad; krinanggala402; submarine
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1 posted on 04/24/2021 7:27:57 AM PDT by BenLurkin
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To: BenLurkin

Preliminarily it sounds like maybe the inner torpedo tube door wasn’t closed and/or secured when they flooded the tube and opened the outer tube door.


2 posted on 04/24/2021 7:40:53 AM PDT by fatman6502002 ((The Team The Team The Team - Bo Schembechler circa 1969))
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To: BenLurkin

An Argentine boat was lost a few years back, too. I don’t recall the cause of that one.

What could cause a sub to be lost during a torpedo drill, I wonder?


3 posted on 04/24/2021 7:41:31 AM PDT by BradyLS (DO NOT FEED THE BEARS!)
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To: fatman6502002

Interesting possibility!

Reading the article, it doesn’t say what thpe of debris was recovered. I wonder if that might yield clues to what happened?

Wasn’t that Russian leviathan, the Kursk, lost when a torpedo malfunctioned and exploded? It sank in water shallower than its length!


4 posted on 04/24/2021 7:50:08 AM PDT by BradyLS (DO NOT FEED THE BEARS!)
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To: BenLurkin

If it went below crush depth, it would likely make a very loud noise that would be heard by other submarines around the world.


5 posted on 04/24/2021 8:15:17 AM 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: BradyLS

There are about a million things that can wrong and sink a dub at depth. Hard to say if the debris recovered will shed much light on the casualty that happened. There is certainly the chance that the debris will help the investigators. Remember though, the investigation by the Indonesians is unlikely to report the true cause of this sinking because their main goal will to be the need to save face. Saving face and covering up anything that will cause institutional embarrassment will be the overarching goal of any report about this sub sinking.


6 posted on 04/24/2021 8:17:25 AM PDT by fatman6502002 ((The Team The Team The Team - Bo Schembechler circa 1969))
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To: fatman6502002
Preliminarily it sounds like maybe the inner torpedo tube door wasn’t closed and/or secured when they flooded the tube and opened the outer tube door.

IIRC, in Herbert Werner's book about his U-Boat experiences, "Iron Coffins", they discovered by accident, why some boats disappeared without a trace.

They left the outer doors of their torpedo tubes open while in port and when bombs were dropped, the concussion blew open the inner doors. He figured some boats had done that after an attack and the following depth charge attacks did the same.

Here's a gCaptain article that gives some background:

Missing Indonesian Submarine Was Old And Overloaded

The Indonesian navy’s missing submarine may have been too old and overloaded when it embarked on a military exercise on Wednesday, according to a defense analyst. The KRI Nanggala-402 that disappeared in waters off Bali island was carrying 53 crew during training, Indonesia’s defense ministry said. A submarine of that class has a maximum capacity of 40, according to Ridzwan Rahmat, principal defense analyst at Janes.

Its age does not help either. At over 40 years, the Cold War-era submarine is among the world’s oldest in service today and was not built to withstand pressure beyond 230 meters (754 feet) deep, Ridzwan said.

This adds greater urgency for rescuers who are racing against the clock to find the missing submarine and its crew. Air in the KRI Nanggala-402 is estimated to be breathable only until 3 a.m. on Saturday, Jakarta time, after which oxygen is insufficient, according to navy Commander Admiral Yudo Margono.

Survival rates are low for victims of submarine accidents in waters deeper than 200 meters. While people can self-evacuate to the surface in shallower waters less than 50 meters, pressure at greater depths is strong enough to crush steel hulls and lungs, according to salvage experts. About 118 crew died in 2000 when the Russian nuclear stealth machine Kursk exploded then came to rest on the ocean floor off Murmansk. About 44 crew perished when the aging Argentinian submarine ARA San Juan went missing in 2017. Navies in Singapore and Malaysia have sent ships equipped with deep submergence rescue vehicles to aid in the search.

The U.S.’s Poseidon airship is also en-route from the Philippines, while two Australian vessels have arrived on-site, Indonesia’s army spokesperson Djawara Whimbo said on Friday.

Meanwhile, Indonesia has deployed more than 20 vessels to scour the waters and is conducting aerial surveillance after an oil spill was found around the submarine’s starting dive position.

“Hopefully, this can be found soon while there is still spare oxygen,” the navy’s Margono said in a Thursday statement.

Refurbished Submarine
Questions are being raised as Indonesian authorities try to shed light on the Southeast Asian nation’s first submarine disappearance. According to the Janes analyst, the incident could have been avoided if the vessel wasn’t overloaded or kept in service for so long.

The typical life cycle for a naval submarine is only about 30 to 35 years, Ridzwan said. KRI Nanggala-402 was built in Germany in 1977 and joined the ranks of the Indonesian navy in 1981. It was supposed to be decommissioned but because of limited funding, the government decided to upgrade it instead in South Korea, he said.

“It was an accident waiting to happen,” Ridzwan said.

Rescuers will likely have to break the hull or conning tower as the submarine doesn’t have a rescue seat, he said. However, hopes of survival are growing dim. “It’s possible people don’t survive,” he said.

–With assistance from Claire Jiao.

7 posted on 04/24/2021 8:18:05 AM PDT by Oatka
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To: BradyLS

As I said, about a million things can cause a sub to sink at depth. Also, the casualty might not have even been part of the torp drill.maybe a high pressure pipe broke in the engine room, or maybe there was a problem and their batteries exploded and breached the pressure hull. A lot of different things could have happened. Submarining is a very dangerous business especially when serving in a third world navy; they’re not known for good maintenance or training.


8 posted on 04/24/2021 8:23:40 AM PDT by fatman6502002 ((The Team The Team The Team - Bo Schembechler circa 1969))
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To: BradyLS

“Wasn’t that Russian leviathan, the Kursk, lost when a torpedo malfunctioned and exploded? “


A former student was aboard USS Toledo ‘in the area’ where the Kursk was lost. He had nothing to say about any of it. The Russians at first did try to blame USS Toledo for the loss.


9 posted on 04/24/2021 8:37:52 AM PDT by hanamizu
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To: Oatka

I wonder what went into the decision to overload the complement of the ship by 33%? If serving a tour on a sub is a resume enhancer, maybe that could be a reason. Or maybe they needed extra specialists aboard just to keep it maintained/in repair?


10 posted on 04/24/2021 8:40:46 AM PDT by BradyLS (DO NOT FEED THE BEARS!)
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To: fatman6502002

I served on the Grenadier (SS-525), 1972-73. It’s keel was laid in ‘44, finished in the early ‘50s.

We spent more time in port than out due to repairs. Our various leaks at 200 feet were about 10 gallons a minute. The pumps could handle it.

It was decommissioned in ‘73 and we sold it to the Venezuelans. Apparently they made use of it until the early ‘90s. I was worried about it’s seaworthiness when I was on it!


11 posted on 04/24/2021 8:41:16 AM PDT by Az Joe (FREE CHAUVIN!)
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To: BenLurkin

Debris believed to be from the sub? Well, it could be the Titanic’s deck chairs, but doubtful.


12 posted on 04/24/2021 8:46:04 AM PDT by bgill
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To: bgill

MH 370


13 posted on 04/24/2021 8:50:31 AM PDT by BenLurkin (The above is not a statement of fact. It is either opinion, or satire. Or both.)
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To: fatman6502002
...it sounds like maybe the inner torpedo tube door wasn’t closed and/or secured when they flooded the tube and opened the outer tube door.

Sounds like Ice Station Zebra.

14 posted on 04/24/2021 8:50:31 AM PDT by SKI NOW
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To: BenLurkin

Indonesian Rescuers Recover Debris Believed to Be From Missing FLIGHT 828.

Indonesian Rescuers Recover Debris Believed to Be From Missing Oceanic Flight 815.

Indonesian Rescuers Recover Debris Believed to Be From a destroyed alien spacecraft.


15 posted on 04/24/2021 9:07:41 AM PDT by faucetman (Just the facts, ma'am, Just the facts )
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To: BenLurkin

Is there going to be a rescue attempt for the survivors? /s


16 posted on 04/24/2021 9:10:15 AM PDT by faucetman (Just the facts, ma'am, Just the facts )
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To: faucetman

it 1000 feet deeper than designed max pressure.I would bet its crushed, which would cause hull breach.


17 posted on 04/24/2021 9:22:22 AM PDT by davidb56
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To: BenLurkin
Saya turut berdukacita. Saya berdoa supaya menerima dukungan dan kekuatan dari Tuhan. Tuhan berkati.

🇮🇩

18 posted on 04/24/2021 9:48:59 AM PDT by Jemian (War Eagle!)
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To: Jemian

I should have also posted a translation:

I join in your sorrow. I am praying you [Indonesians] receive strength and support from God. God bless you.


19 posted on 04/24/2021 9:50:31 AM PDT by Jemian (War Eagle!)
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To: BenLurkin

Where was the sub made?


20 posted on 04/24/2021 11:34:32 AM PDT by 353FMG
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