Indonesian sub missing.

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dunroaming
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Re: Indonesian sub missing.

Post by dunroaming » April 25, 2021, 10:09 pm

Might have missed some of the experts on here but the hull would have split at the depths it was found that's not to say thats the reason it sank. Until there is a full investigation nothing is off the table as far as I'm concerned everything is heresay and speculation ill then



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noosard
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Re: Indonesian sub missing.

Post by noosard » April 26, 2021, 6:48 am

"The KRI Nanggala is divided into three parts, the hull of the ship, the stern of the ship, and the main parts are all separated, with the main part found cracked," he said.

This article was published in thejakartapost.com with the title "Sunken KRI Nanggala 402 submarine found cracked open by rescuers". Click to read: https://www.thejakartapost.com/news/202 ... cuers.html.


Download The Jakarta Post app for easier and faster news access:
Android: http://bit.ly/tjp-android
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Authorities lost contact with the KRI Nanggala 402 submarine after it submerged early on Wednesday during a torpedo drill in the Bali Strait.

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Khun Paul
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Re: Indonesian sub missing.

Post by Khun Paul » April 26, 2021, 7:01 am

Interesting scenario and much speculation as to why it split, until recovered nothing is off the table as the reasons. RIP to the Sailors and the outcome we will just have to wait .

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Re: Indonesian sub missing.

Post by Doodoo » April 26, 2021, 9:18 am

Whistler
You said the Indonesian sub has a MAX DIVE depth of 250 m You had best read do your research as it it has a Max dive depth (tested) at 240m
Unless you have it on you super spy network
I wont come to the level you have gone down to with the name calling . Growup

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Re: Indonesian sub missing.

Post by Whistler » April 26, 2021, 9:50 am

OMG doodoo, I read that in the paper, 10M big deal. I was not calling you names, just accurately describing your contribution.
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tamada
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Re: Indonesian sub missing.

Post by tamada » April 26, 2021, 9:52 am

Submarine wars!

Fomented by non-submariners no less!

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Re: Indonesian sub missing.

Post by Doodoo » April 26, 2021, 10:11 am

Tam is off fishing again.

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tamada
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Re: Indonesian sub missing.

Post by tamada » April 26, 2021, 10:31 am

^ To be honest Dubbeldoo, it's a tough call between your submarine-by-Wiki knowledge base or Whistler's. Right now you have the edge since Whistler reckons +10 m doesn't mean squat when to the professional submariner it means 364.6 psi versus 379.2 psi.

Now don't you go spoiling your thin lead now.

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Re: Indonesian sub missing.

Post by Whistler » April 26, 2021, 10:42 am

Agree it makes a whole 4% difference, this is junior high school physics. That's without any safety margin that would always be taken into consideration. In other words three fifths of FA. The sub went down in 600 or 700 metres of water, it is hardly relevant in that case
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Re: Indonesian sub missing.

Post by Doodoo » April 26, 2021, 10:45 am

Tumtum
You are missing teh WHOLE point TEST DEPTH I have never siad actual depth that is Whist input as for yours well what can I say

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Re: Indonesian sub missing.

Post by Whistler » April 26, 2021, 10:54 am

What is more, that was the specs when the sub was new. After 40 years, metal fatigue would have come into play and it safe depth is certainly a good deal less than the 'as new' certified spec.
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Re: Indonesian sub missing.

Post by jackspratt » April 26, 2021, 11:11 am

Whistler wrote:
April 26, 2021, 10:42 am
In other words three fifths of FA.
That pretty much describes most of the discussion on this page. :?

Time to give it a rest, ladies.

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tamada
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Re: Indonesian sub missing.

Post by tamada » April 26, 2021, 11:18 am

As the fourth non-submariner in this pissing contest, I concur with Whistler and reckon the sub was beyond it's safe use-by date. The manufacturers minimum specs including TEST versus NORM operating depth are as pertinent and relevant as the price of durian.

This is what happens when you decide to save money after your car is out of warranty and you start using Somchai and Nong or buying stuff on lazada and doing it yourself.

Oh, wait....

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Re: Indonesian sub missing.

Post by vlad » April 26, 2021, 12:49 pm

As I worked on most of the Royal Navy Sub's we have delivered from Trafalgar Class, S class, Trident, and Astute class, even Non Nuclear such as Upholder Class let me give you my opinions on this Accident and the loss of the Indonesian Submarine. From what has been given out in my opinion the integrity of the pressure Hull Welds failed due to more likely age and corrosion, plus fatigue. The Steel used to form the pressure hull will not be a high quality yield we use today. As for upgrades yes even though it was 40 + years old they could only upgrade weaponry, Sonars, Telecommunication upgrades. Structural upgrades to a pressure hull is not possible only casings or Hydroplanes rudders etc. I don't believe the Indonesian Sub hit its Crush depth otherwise it would have shattered like USS Thresher that exceeded its crush depth as seen by Bob Ballard when he found it. An Explosion in a Torpedo tube is possible as in The Kursk loss could happen. but that's not What happened here. I believe sadly the submarine dived and a Mechanical fault along with a complete Electrical failure resulted loss of power that Doomed the Sub and her Crew. As for operational numbers Depths are Classified and it is at best only released what people want to hear.

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Re: Indonesian sub missing.

Post by Whistler » April 27, 2021, 6:35 am

Doodoo wrote:
April 26, 2021, 9:18 am
Whistler
You said the Indonesian sub has a MAX DIVE depth of 250 m You had best read do your research as it it has a Max dive depth (tested) at 240m
Unless you have it on you super spy network
I wont come to the level you have gone down to with the name calling . Growup
I would reiterate that you are being extremely pedantic about 10M dive depth for a 40+ year old submarine. [Redacted by Moderator]
Best being part of this forum by placing the intellectual challenged on foes list. A lot less post to read and a great time saver.

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Drunk Monkey
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Re: Indonesian sub missing.

Post by Drunk Monkey » April 27, 2021, 8:20 am

vlad wrote:
April 26, 2021, 12:49 pm
As I worked on most of the Royal Navy Sub's we have delivered from Trafalgar Class, S class, Trident, and Astute class, even Non Nuclear such as Upholder Class let me give you my opinions on this Accident and the loss of the Indonesian Submarine. From what has been given out in my opinion the integrity of the pressure Hull Welds failed due to more likely age and corrosion, plus fatigue. The Steel used to form the pressure hull will not be a high quality yield we use today. As for upgrades yes even though it was 40 + years old they could only upgrade weaponry, Sonars, Telecommunication upgrades. Structural upgrades to a pressure hull is not possible only casings or Hydroplanes rudders etc. I don't believe the Indonesian Sub hit its Crush depth otherwise it would have shattered like USS Thresher that exceeded its crush depth as seen by Bob Ballard when he found it. An Explosion in a Torpedo tube is possible as in The Kursk loss could happen. but that's not What happened here. I believe sadly the submarine dived and a Mechanical fault along with a complete Electrical failure resulted loss of power that Doomed the Sub and her Crew. As for operational numbers Depths are Classified and it is at best only released what people want to hear.
Good post vlad.

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Re: Indonesian sub missing.

Post by vlad » April 27, 2021, 12:01 pm

It still is a volenteer for The Submarine Service as its not the normal jack Tar Once submerged you can circumnavigate the globe underwater its not unusual to work your days out with what food you get in the mess ie Saturdays curry night or sunday full roast. No windows or fresh air till you surface. For the ones who think they know what dephs and limitations they can withstand stand the Titanic sits at over 12.000 ft yet still remains recognizable with a riveted hull. It did not crush like a submarine like the Thresher or USS Scorpion which imploded 450 ft past its crush depth of 1,950 ft. Scirpion sits shattered at 9,800.ft.

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tamada
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Re: Indonesian sub missing.

Post by tamada » May 1, 2021, 8:12 am

The water pressure flooding inside a sinking ship mostly equalises the external pressure so unless it's a sealed machine space or cargo hold, most wrecks on the sea floor look shipshape. The submarine is a sealed compartment and eventually the huge external pressure prevails when one sinks.

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Re: Indonesian sub missing.

Post by Doodoo » May 1, 2021, 9:39 am

In other words "The water got inside the sub. flooding it"

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Re: Indonesian sub missing.

Post by vlad » May 1, 2021, 1:08 pm

Water is allowed to flood into the Submarine Doodoo its called Ballest. Flood the Ballest Tanks it sinks. pump it out it Surfaces.Tam's is correct a submarine is Basically a sealed tube which is pressurized same as an A jet liner is. put a hole in it and Bang.

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