Australian Collins-class Submarine within seconds from sinking., page 1
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reply posted on 23-7-2005 @ 11:25 AM by sanctum
No cover-up of sub flood.
"You know there are certain things the Navy have to keep secret because they're operational security matters that go to the heart of the national security of the country.

"And one of them is the operational capability of the Collins Class submarines and the last thing we want is potential adversaries to learn about their operational capability."

Article

So who's telling the truth?

"I don't think there was anybody on our boat who wasn't scared that day," said Able Seaman Geordie Bunting, who almost drowned in the flood and who has now spoken about it for the first time.

"Another five seconds and we would have been in big trouble ... another 10 and you have got to question whether we could have surfaced."

Mike Deeks, the then commander of the navy's submarine force, said: "We were talking seconds, not minutes. It was a very serious, significant flood."


CANSG Commodore Mike Deeks
(dated June 2004)
Commodore Mike Deeks

Talk about a flip flop.
These subs' are diesel powered lemons.

Sanc'.

[edit on 23-7-2005 by sanctum]


reply posted on 29-12-2005 @ 08:29 AM by orangetom1999
This article indicates that they took on water when a pipe burst underway or at a certain depth.
Submarines are built with their sea water systems being capable of isolation at the hulls. Usually a two valve ..system at the hulls where the water comes in or goes back out.
For a pipe to burst it means poor design or manufacturing process or poor maintnence. It is not clear whether there was a mechanical process of nuts and bolts/studs or the pipe broke where it was brazed or welded.
Nevertheless the system should have been capable of being isolated at the hulls where he water comes into the boat. This is called a hull and back up valve system. This whole system should have been capable of being isolated. Any excess water should have been capable of being pumped out of the bilges where it collected. A good submarine design will have all these sea valves and back up valves being overidden in case of emergencys like this by a master valve which will shut all hull openings from a emergency flood control station. These are sometimes called "Chicken switches".
Alot of this also depends on the competency of the crew...the whole crew..particularly those who are on watch at the time. This emergency type drill is standard practice in case of this type of casualty.
The other system which needs to work and flawlessly is the one for emergency blow which brings you to the surface by blowing emergency air into the ballast tanks..also from a emergency station.
My initial reaction is that they have some problems with designs...materials used or both.
A system like this would be tested by isolating the system at the hull valves, filling it with water and pumping it up to designed testing pressure. It should be tested to pressures higher than the depth at which the boat will be normally operating. This will tell you where your problems are at. Either mechanical or piping design failures.
If they are having known problems in this area and have been forced to put to sea..someone is really screwing up or covering up. You dont fool around with stuff like this.
It makes me wonder since the Canadians are also having problems with thier submarines.

Seawater like this on a diesel boat would be used to cool other systems within the boat with a section tapped off to go to the distillation or potable water purification equipment. I think now days these are what is called a reverse osmosis system.


Thanks,
Orangetom


reply posted on 4-1-2006 @ 10:32 AM by Harlequin
Yes the canadians bought the subs , then didn`t even survice them before they ran them into canada

www.btinternet.com...


basically - they lay doing nothing for at least 4 years each before cananda got them and this is the most telling part:


Accepted into service July 1991. Paid off 1994, leased to Canada and renamed HMCS Victoria (SSK 876). To operate in Atlantic Ocean. First submarine to be taken out of mothballs and reactivated. Officially handed over to Canada at Barrow-in-Furness on 6th October 2000. Set sail for Halifax three days later.



other info on teh internet says theat teh CDN forces did very little reactivation work.


they blame the brits - the brits say they got a cut price diesel boat and never said they would make them sea worthy at that was the new owners job.


[edit on 4/1/06 by Harlequin]
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