SUBSIM Radio Room Forums - Argentine navy lost contact with sub [UPDATE: SUB FOUND]

Page 2 of 6

Show 20 post(s) from this thread on one page

SUBSIM Radio Room Forums (https://www.subsim.com/radioroom/index.php)

- Sub & Naval Discussions: World Naval News, Books, & Films (https://www.subsim.com/radioroom/forumdisplay.php?f=186)

- - Argentine navy lost contact with sub [UPDATE: SUB FOUND] (https://www.subsim.com/radioroom/showthread.php?t=235528)

Onkel Neal

11-19-17 09:18 PM

Argentina says it may have received signals from missing sub

Distress calls received...?
https://news.google.com/news/video/U...Uwt_k77M?hl=en

News is all over the place on this. :hmmm:

em2nought

11-20-17 01:31 AM

It's too bad this guy isn't still around as Swede would be their only hope. Our navy can't steer a ship without running into something nowadays. I don't give it much chance at deep sea rescue. Too many politically correct, or incorrect decisions, and too much social engineering to do first before they ever got around to mounting a rescue. https://en.wikipedia.org/wiki/Charles_Momsen
https://upload.wikimedia.org/wikiped...les_Momsen.jpg

A real man's man, and leader that guy! Not afraid to get his hands dirty, naval officers take note. ;)

GoldenRivet

11-20-17 01:41 PM

For those who have not been keeping up with this on the Subsim Facebook Page, here's the latest:

Argentine Navy has confirmed that the satellite calls did NOT originate from the submarine.
Argentine Navy confirms that it did receive messages from submarine indicating electrical problems and was ordered to return to port
Two search vessels have reported detection of sounds on sonar consistent with tools being hammered against the side of the hull and have narrowed search area to 35 sq nautical miles to zero in on the source location of the sounds

Onkel Neal

11-20-17 02:55 PM

Thanks, John

Skybird

11-20-17 03:54 PM

I just realised I have no clue on how long a Diesel boat of this kind can stay submerged without the crew running out of oxygene if Diesels are not running...? This is no 212.

Jimbuna

11-20-17 04:11 PM

Quote:

Originally Posted by Skybird (Post 2526528)

I just realised I have no clue on how long a Diesel boat of this kind can stay submerged without the crew running out of oxygene if Diesels are not running...? This is no 212.

Quote:

In a "worst-case scenario," the missing sub could run out of oxygen in two days, Argentine navy spokesman Enrique Balbi said Monday.
Under normal circumstances, the vessel has sufficient fuel, water, oil and oxygen to operate for 90 days without external help, said Balbi, and the vessel could "snorkel" -- or raise a tube to the surface -- "to charge batteries and draw fresh air for the crew."
If the sub is bobbing adrift on the surface and the hatch is open, it will have an available air supply and enough food for about 30 days, he said.
But if it is submerged and cannot raise a snorkel, its oxygen may last only about seven days. When the sub last made contact on Wednesday, five days ago, it was submerged, Balbi said.

http://edition.cnn.com/2017/11/20/am...now/index.html

Falkirion

11-20-17 07:15 PM

I'm curious, assuming the USN have an SSN somewhere nearby, would they be tasked to assist with the search or is that more on whatever other assets the Argentinians/other nations can mobilize?

Really hope the boat and crew is found soon.

Mork_417

11-20-17 09:30 PM

Still hoping for the best.

Hartmann

11-20-17 11:41 PM

Quote:

Originally Posted by Falkirion (Post 2526586)

Probably some submarine could be in the area right now, but it only works if the Ara Santa fe is alive, or the crew is banging tools against the hull.

SSN can go below the termal layer and good options detecting the Argentinian submarine.

I´m not sure if the active sonar is useful or can detect submarines on the sea floor.

Skybird

11-21-17 03:42 AM

Quote:

Originally Posted by Jimbuna (Post 2526544)

http://edition.cnn.com/2017/11/20/am...now/index.html

Sounds as if the spokesman in that article is somewhat avoiding the question. Mentioning snorkeling and m ission operation time while the sub obviously cannot surface or move, is a distraction.

Their electric did break probably, so implies the news so far, maybe they even had a battery or cable fire, which is worst case, or in toxication of the atmosphere from the betteries, and I take it that the sub sits still on the ground. Who knows how long it was submerged already when the problems showed up. I think you do not snorkel from 70m, or do you?

I fear they are already gone. Its the scenario with the highest probability. Hope I am wrong, though.

Reece

11-21-17 03:47 AM

I would imagine the batteries nowadays would be sealed.:hmmm:

Onkel Neal

11-21-17 06:11 AM

Argentina's navy says fresh noises are not from missing submarine

Quote:

Argentina’s navy has said sounds detected from the bottom of the ocean are not from the submarine which has been missing in rough seas for five days with 44 crew on board.

Spokesman Enrique Balbi said “a biological source” was behind the noises which were picked up by two Argentinian navy ships searching for ARA San Juan and by sonar buoys dropped by a US P8 surveillance plane.

The navy has also revealed the submarine’s last communication, on Wednesday, was to report a mechanical breakdown related to its batteries. Captain Gabriel Galeazzi, who runs the naval base in Mar del Plata, which was the submarine’s destination, said mechanical problems were not uncommon and rarely posed a risk.

Jimbuna

11-21-17 08:23 AM

Quote:

Originally Posted by Skybird (Post 2526616)

I fear they are already gone. Its the scenario with the highest probability. Hope I am wrong, though.

Sadly, I think you may well be right.

Marcantilan

11-21-17 09:40 AM

Still praying.

Niume

11-21-17 11:37 AM

I had hope that they may be found the sub then they heard tools getting banged on the hull. But now I have little faith now. One thing good is the weather is clearing up a bit.
Its still unclear to me how much the sub still has Oxygen left.

AVGWarhawk

11-21-17 11:55 AM

Quote:

Originally Posted by Niume (Post 2526698)

As of yesterday I believe it was stated 2 days of O2 left. Horrible situation.

daft	11-21-17 12:39 PM

Quote:

Originally Posted by AVGWarhawk (Post 2526699)

As of yesterday I believe it was stated 2 days of O2 left. Horrible situation.

And I assume that is a guess considering how little they know about the series of events.

AVGWarhawk

11-21-17 12:44 PM

Quote:

Originally Posted by daft (Post 2526710)

And I assume that is a guess considering how little they know about the series of events.

I would believe so, yes.

Onkel Neal

11-22-17 07:32 AM

Articles I have been reading estimate the ocean depth ~230 feet, so if they were unable to surface perhaps they could attempt an emergency escape.

http://www.dailymail.co.uk/news/arti...ated-Navy.html

Quote:

Unlike modern nuclear subs, the 34-year-old, diesel-powered vessel must come up for air every seven days to replenish the cabin’s oxygen supplies and allow its four engines to charge its batteries.

The submarine has emergency canisters that would provide an extra few days of oxygen and remove toxic carbon dioxide, but there is a possibility that it may not be functioning because the vessel is out of power.

Frank Owen, from the Submarine Institute of Australia, told news.com.au that the crew could well be waiting underwater for their chance to surface.
“We know it’s been really rough, so even though the Argentinian navy protocol is to surface, it makes no sense with 6-8m waves to be sitting on the surface,” he said.

“If I was in that situation, I would be sitting on the bottom and waiting, doing everything I could to slow down my metabolism and eke out the life support mechanisms, reduce oxygen use and CO2 creation.”

http://www.news.com.au/world/south-a...53b89db966fec3

AVGWarhawk

11-22-17 10:17 AM

HOPEFULLY GOOD NEWS!!!!

Quote:

Missing Argentine submarine 'is located by US Navy and a new sonar signal heard' as rescuers race to the spot with oxygen due to run out imminently

http://www.dailymail.co.uk/news/arti...ated-Navy.html

All times are GMT -5. The time now is 12:02 AM.

Page 2 of 6

Show 20 post(s) from this thread on one page