The Submarine thread

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Profile janneseti
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Message 1718606 - Posted: 26 Aug 2015, 15:54:35 UTC - in response to Message 1718604.  
Last modified: 26 Aug 2015, 16:11:50 UTC

Thanks Chris:)

Geeze...

HMS Gotland outside San Diego as a surface vessel.


https://en.wikipedia.org/wiki/HSwMS_Gotland_(1995)#Lease_to_the_United_States_Navy
In 2004, the Swedish government received a request from the United States of America to lease Gotland – Swedish-flagged, commanded and manned, for a duration one year for use in anti-submarine warfare exercises. The Swedish government granted this request in October 2004, with both navies signing a memorandum of understanding on 21 March 2005

From the Russian Navy website:
Russian Nuclear Subs' Entry Into Service Pushed Back to 2014
http://rusnavy.com/news/navy/index.php?ELEMENT_ID=17082
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Message 1718671 - Posted: 26 Aug 2015, 18:43:48 UTC

i keep thinking of the beatles song
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Message 1718695 - Posted: 26 Aug 2015, 19:43:06 UTC

I could nosh on one, I'm hungry.
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Message 1718723 - Posted: 26 Aug 2015, 20:18:52 UTC - in response to Message 1718695.  

I could nosh on one, I'm hungry.

Subs are quite tasty.
And a beer with it is nice.

Oh Nosh means Cheers in Kurdish:)
http://blogs.wsj.com/middleeast/2013/09/13/nosh-the-peculiar-case-of-kurdish-beer/
Say hello to our Kurdish beer: Ava Zêr!
Carek ji Caran, Hebû Nebu (it was once in the beginning) two Kurdish boys would gather around their respective families and listen to dramatic tales of Kurdistan.

Stories of how families and legends created out of love and unity. Stories so inspiring that the boys were hoping that one day share these stories to the rest of the world.

When they met as adults, they realized that they not only shared the same narrative tradition, but also the same goals in life; namely to create something that celebrated their own background story and others' stories. They also wanted to create something that makes people come together and something that can be spread around the whole world. The result?

Ava Zer. The ultimate lager beer when you want to bring the stories to reality and share your stories with others.

It does not matter who you are, where you come from, what you have experienced in your life or what you do today - you have a unique story to tell, the story of your life story of your dreams.

Biji Kurdistan:)
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Message 1718725 - Posted: 26 Aug 2015, 20:24:56 UTC - in response to Message 1718695.  

We're having hot dogs done up
on the BBQ for supper....


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Message 1718736 - Posted: 26 Aug 2015, 20:34:44 UTC

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Message 1718744 - Posted: 26 Aug 2015, 20:50:26 UTC
Last modified: 26 Aug 2015, 20:51:01 UTC

Anyone heard about the new U 36.
A fuel cell submarine




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Message 1718745 - Posted: 26 Aug 2015, 20:50:59 UTC - in response to Message 1718736.  


Yummie.
Perhaps a Whiskey on the Rocks as an Apéritif:)
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Message 1718750 - Posted: 26 Aug 2015, 20:57:28 UTC - in response to Message 1718744.  
Last modified: 26 Aug 2015, 21:00:45 UTC

Anyone heard about the new U 36.
A fuel cell submarine


We haven't heard any of theme because they are so silent:)
Anyway here are them.
Lonely Wolf.
http://www.fuelcelltoday.com/news-archive/2013/may/u36-another-fuel-cell-submarine-for-the-german-navy
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Message 1718757 - Posted: 26 Aug 2015, 21:10:49 UTC - in response to Message 1718750.  

Anyone heard about the new U 36.
A fuel cell submarine


We haven't heard any of theme because they are so silent:)
Anyway here are them.
Lonely Wolf.
http://www.fuelcelltoday.com/news-archive/2013/may/u36-another-fuel-cell-submarine-for-the-german-navy


What i found very interesting is, this submarine is fully operational at 2000 feet.
Not diving tho but operational.
My youngest was invited a few years ago.


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Message 1718772 - Posted: 26 Aug 2015, 21:23:37 UTC - in response to Message 1718757.  

What i found very interesting is, this submarine is fully operational at 2000 feet.Not diving tho but operational.

2000 feet are about 600 meters.
IFAIK subs can only operate at to 400 meters.
Anyway the Baltic sea and Skagerack is shallow.
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Message 1719138 - Posted: 27 Aug 2015, 16:28:23 UTC - in response to Message 1719128.  
Last modified: 27 Aug 2015, 16:31:53 UTC

Design depth is the nominal depth listed in the submarine's specifications. From it the designers calculate the thickness of the hull metal, the boat's displacement, and many other related factors. Since the designers incorporate margins of error in their calculations, crush depth of an actual vessel should be slightly deeper than its design depth.

Test depth is the maximum depth at which a submarine is permitted to operate under normal peacetime circumstances, and is tested during sea trials. The test depth is set at two-thirds of the design depth for United States Navy submarines, while the Royal Navy sets test depth slightly deeper than half (4/7ths) of the design depth, and the German Navy sets it at exactly one-half of design depth.

The maximum operating depth (popularly called the never-exceed depth) is the maximum depth at which a submarine is allowed to operate under any (e.g. battle) conditions.

Crush depth, officially called collapse depth, is the submerged depth at which a submarine's hull will collapse due to pressure. Modern nuclear attack submarines like the American Seawolf class are estimated to have a test depth of 490 m (1,600 ft).


Correct, and for submarines of the class 212A U36 is the latest its 700 meter.


https://en.wikipedia.org/wiki/Type_212_submarine


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Message 1719145 - Posted: 27 Aug 2015, 16:50:26 UTC

In one sense I'm not surprised that the Germans are producing a large deep diving submarine, as, for many years they led the world in the field of submarine design and construction
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Message 1719157 - Posted: 27 Aug 2015, 17:28:09 UTC - in response to Message 1719138.  
Last modified: 27 Aug 2015, 17:29:50 UTC

Design depth is the nominal depth listed in the submarine's specifications. From it the designers calculate the thickness of the hull metal, the boat's displacement, and many other related factors. Since the designers incorporate margins of error in their calculations, crush depth of an actual vessel should be slightly deeper than its design depth.

Test depth is the maximum depth at which a submarine is permitted to operate under normal peacetime circumstances, and is tested during sea trials. The test depth is set at two-thirds of the design depth for United States Navy submarines, while the Royal Navy sets test depth slightly deeper than half (4/7ths) of the design depth, and the German Navy sets it at exactly one-half of design depth.

The maximum operating depth (popularly called the never-exceed depth) is the maximum depth at which a submarine is allowed to operate under any (e.g. battle) conditions.

Crush depth, officially called collapse depth, is the submerged depth at which a submarine's hull will collapse due to pressure. Modern nuclear attack submarines like the American Seawolf class are estimated to have a test depth of 490 m (1,600 ft).


Correct, and for submarines of the class 212A U36 is the latest its 700 meter.


https://en.wikipedia.org/wiki/Type_212_submarine

Yes but do subs need to dive that deep?
They usually operate not far from shorelines unless they have ICBMs.
They dont launch ICBMs from any deep depths at all.
But that means nuclear war.
The deepest-diving large, military-style submarine was the Soviet submarine K-278 Komsomolets, with a hull made of titanium, making it very expensive, but able to withstand significantly deeper dives than the best submarines made of high-grade steel, like American nuclear submarines. The Komsomolets was a nuclear powered submarine specially designed to make trips as far down as 1300 meters (4265 feet) below sea level, definitely less than the Trieste, but very significant because the Komsomolets had to "defend" a much larger air bubble against the encroaching pressure of the surrounding ocean.

Compared to the best American nuclear submarines, of the Seawolf class, Komsomolets had about 78% better diving capabilities. Seawolf submarines have an estimated crush depth of about 2400 feet (730 m). The Seawolf submarines are constructed of a high grade steel called HY-100, capable of withstanding 100 atmospheres of pressure. As a rule of thumb, the pressure increases by one atmosphere for every 10 m of descent.
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Message 1719160 - Posted: 27 Aug 2015, 17:36:24 UTC - in response to Message 1719145.  

In one sense I'm not surprised that the Germans are producing a large deep diving submarine, as, for many years they led the world in the field of submarine design and construction

And Germany and Sweden continue to lead in areas of non-nuclear propelled submarine design.

Air-Independent Propulsion systems are making non-nuclear submarines very hard to detect. They don't have the range or speed of nuclear subs, but could wreak havoc in coastal waters. There is an on-going discussion in the US submarine community about the usefulness of non-nuclear boats for coastal defense.
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Message 1719171 - Posted: 27 Aug 2015, 17:54:06 UTC - in response to Message 1719157.  

Yes but do subs need to dive that deep?
They usually operate not far from shorelines unless they have ICBMs.
They don't launch ICBMs from any deep depths at all.
But that means nuclear war.

Not necessarily so.

Submarines DO operate in the open ocean, and being able to go deep can be useful in avoiding detection by the enemy, or perhaps avoiding torpedoes fired at the boat. And our Fast Attack subs participate in Oceanographic Research, both in the deep oceans and in the north polar region.

When I rode the FBM boats, we spent very little time at shallow depth. We were ALWAYS in communications with our Command Authority. Yes, we came shallow to launch, and to do routine radio comms and draw fresh air, but mostly we ran deep and quiet, and prayed that the "End of the World" message never came.
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Message 1719183 - Posted: 27 Aug 2015, 18:24:23 UTC - in response to Message 1719171.  

Yes but do subs need to dive that deep?
They usually operate not far from shorelines unless they have ICBMs.
They don't launch ICBMs from any deep depths at all.
But that means nuclear war.

Not necessarily so.

Submarines DO operate in the open ocean, and being able to go deep can be useful in avoiding detection by the enemy, or perhaps avoiding torpedoes fired at the boat. And our Fast Attack subs participate in Oceanographic Research, both in the deep oceans and in the north polar region.

When I rode the FBM boats, we spent very little time at shallow depth. We were ALWAYS in communications with our Command Authority. Yes, we came shallow to launch, and to do routine radio comms and draw fresh air, but mostly we ran deep and quiet, and prayed that the "End of the World" message never came.

Here in Europe most countries are surounded by shallow waters.
I think the average depth is about 60 meters in the Baltic Sea.
400 meters in Landsort south of Stockholm.
Then we have the North Sea, Skagerac and Kattegatt that's almost the same.
The Mediterrainian Sea and the Black Sea is not deep either.
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Message 1719199 - Posted: 27 Aug 2015, 18:48:12 UTC - in response to Message 1719183.  

Here in Europe most countries are surounded by shallow waters.
I think the average depth is about 60 meters in the Baltic Sea.
400 meters in Landsort south of Stockholm.
Then we have the North Sea, Skagerac and Kattegatt that's almost the same.
The Mediterrainian Sea and the Black Sea is not deep either.

Germany also sells their subs, or their designs, to other countries that do have deep waters to patrol.
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Message 1719230 - Posted: 27 Aug 2015, 19:49:26 UTC - in response to Message 1719199.  
Last modified: 27 Aug 2015, 19:54:30 UTC

Here in Europe most countries are surounded by shallow waters.
I think the average depth is about 60 meters in the Baltic Sea.
400 meters in Landsort south of Stockholm.
Then we have the North Sea, Skagerac and Kattegatt that's almost the same.
The Mediterrainian Sea and the Black Sea is not deep either.

Germany also sells their subs, or their designs, to other countries that do have deep waters to patrol.

Both Germany and Sweden makes subs.
The Swedish manufacturer Kockums was part of ThyssenKrupp Marine Systems in Germany.
But on 22 July 2014 it was announced that Saab had bought Kockums from Thyssen Krupp. The new name will be Saab Kockums.
If ThyssenKrupp Marine Systems are making the subs in Germany you mention I don't know.

Next generation of swedish subs.
The new submarine project is intended to be an improved version of the Gotland class.
http://www.defenseindustrydaily.com/saab-story-swedens-new-submarines-024760/
Both The Royal Australian Navy and the Royal Netherlands Navy are intressered.
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Message 1719237 - Posted: 27 Aug 2015, 20:01:11 UTC

I was thinking of trying out subs' but
I can only hold my breath for about four
minutes at a time.....


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