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-   -   Argentinean Submarine down - USN rescue team mobilised (https://www.pprune.org/military-aviation/602107-argentinean-submarine-down-usn-rescue-team-mobilised.html)

SASless 28th Nov 2017 01:38

Latest article on yahoo about the missing Sub.


https://www.yahoo.com/news/us-unders...194653532.html

CAW 30th Nov 2017 01:56


Originally Posted by SASless (Post 9970224)
Westie,

Several US Submariners have told me they would have surfaced the Boat and stayed on the surface to be able to ventilate the Boat as needed should the sea water generate toxic gases by mixing with the acid in the batteries.

Surface in a 20 ft waves-sea? With water pouring in?

Suppose captain would have done so in order to evacuate the crew... what chances would have they had in such a sea?

Lonewolf_50 30th Nov 2017 03:08

@CAW
That depends upon the water temp and the chances they have of getting a distress call out.

Davef68 30th Nov 2017 09:12

I've seen reposted by several sources what claims to be an analysis by Bruce Rule of the Comprehensive Nuclear-Test-Ban Treaty Organization sonar data. Not found the original source though. he does post at this site though:

IUSSCAA Message Board

Octane 30th Nov 2017 09:25

Is it a bit odd it hasn't been located yet with modern submarine detection technology?

Union Jack 30th Nov 2017 10:03

A very sad and sobering, albeit unconfirmed, account of what is believed to have occurred in the final moments of the loss of the ARA SAN JUAN will be found at:

https://thenewstalkers.com/community...of-a-submarine

Incidentally, for the benefit of those conjecturing on the relative calm to be found when a submarine dives to avoid extreme surface conditions, I have experienced a 26 degree role to either side in a nuclear submarine - at 500 feet keel depth. I can't say where or when, but I was certainly very glad not to be nearer the surface.

Jack

sandiego89 30th Nov 2017 10:23


Originally Posted by Octane (Post 9974069)
Is it a bit odd it hasn't been located yet with modern submarine detection technology?



No, an active submarine is hard to detect, deep wreckage even harder- as we have seen with other ship and aviation incidents.

Wander00 30th Nov 2017 14:27

UJ - I think that is the most sobering text I have ever read. RIP the crew

air pig 30th Nov 2017 16:29


Originally Posted by Wander00 (Post 9974323)
UJ - I think that is the most sobering text I have ever read. RIP the crew

Totally agree, Wander 00. Very sobering and it tells the rest of us the risks that submarine crews of any navy face each day.

MFC_Fly 30th Nov 2017 16:29


Originally Posted by Octane (Post 9974069)
Is it a bit odd it hasn't been located yet with modern submarine detection technology?

You're obviously not an ASW expert are you?

Octane 30th Nov 2017 20:15

MFC,

No, that's why I asked the question...

wdew 30th Nov 2017 21:07

Well it seems to me the analysis of the acoustic signals by that expert shows what occurred and he is very factual about the events . RIP

pasta 1st Dec 2017 07:25


Originally Posted by Octane (Post 9974665)
No, that's why I asked the question...

Put simply, dead submarines don't make any noise, and they tend to sit on the seabed, both of which make them hard to spot.

They'll probably locate it using side-scan sonar, but that takes time to set up, and at this stage there seems little need for urgency.

Edit: The other point is that if you're still hoping to rescue people, you're going to focus your efforts on looking for a live submarine, even if that decreases the chance of finding a dead one.

YellowTom 1st Dec 2017 07:39

Roughly speaking you listen on a rescue mission and look on a recovery mission, albeit various electromagnetic versions as well as natural versions of listening and looking.

Linedog 1st Dec 2017 09:17

A pity was haven't got a Nimrod in the Falklands anymore.

air pig 1st Dec 2017 10:21


Originally Posted by Linedog (Post 9975137)
A pity was haven't got a Nimrod in the Falklands anymore.

Somehow not matter how good a Nimrod and there crew were, in this case the crew met their fate very very quickly. RiP.

Jayand 1st Dec 2017 11:38

Did we ever have a Nimrod on the Falklands? Operated from Ascension during the war in 82.
Wouldn't really help very much now that it's lying on the bottom unless very shallow water and you knew where to search.

pasta 1st Dec 2017 15:46

And if you did have the capability to locate a dead submarine on the seabed, at a depth of at least 400m, from an aircraft, I doubt you'd want the rest of the World to know about it...

TEEEJ 1st Dec 2017 19:40


Originally Posted by Jayand (Post 9975271)
Did we ever have a Nimrod on the Falklands? Operated from Ascension during the war in 82.
Wouldn't really help very much now that it's lying on the bottom unless very shallow water and you knew where to search.

Nimrods did deploy now and again to the Falklands.

See following thread.

http://www.pprune.org/military-aviat...falklands.html

MFC_Fly 1st Dec 2017 20:00


Originally Posted by Jayand (Post 9975271)
Did we ever have a Nimrod on the Falklands?

Yes - been there, done it, got the T-shirt :ok:


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