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Double-hulled submarines - Why doesn't the U.S. Navy build them?
Janaury 24, 2010 | myknowledge

Posted on 01/23/2010 12:27:35 PM PST by myknowledge

I'm sure you have heard of the United States Navy's proud and elite submarine service, comprising high-tech nuclear subs such as the LA, Seawolf and Virginia class SSNs, Ohio class boomers and SSGNs, and historically, Sturgeon class SSNs and George Washington class boomers.

But they have one thing in common: They are single-hulled subs. Subs with only one hull.

In stark contrast, the Russian Navy has fielded to this day, double-hulled submarines, such as the Akula class SSN and Typhoon class SSBN, the largest in the world, along with the latest Borei class SSBN and soon-to-be-completed Graney class SSN.

So here's my question: Why doesn't the United States Navy's submarine fleet ever have double-hulled subs?


TOPICS: Military/Veterans
KEYWORDS: ssn; submarines; usnavy
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To: myknowledge

Well dip me in ****. I stand corrected.


21 posted on 01/23/2010 12:49:22 PM PST by mylife (Opinions: $1.00 Halfbaked: 50c)
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To: myknowledge
The only thing I know about submarines is from watching "Operation Petticoat." That said, here are my suspicions.

The US has designs that provide more protection than a double hull, such as internal compartmentalization. The double hull significantly increases size and weight. Imagine driving a car with a second larger body and an air space in between the bodies.

22 posted on 01/23/2010 12:49:58 PM PST by Richard Kimball (We're all criminals. They just haven't figured out what some of us have done yet.)
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To: myknowledge
I have three novels at home about both U.S. and Russian subs

Oh. I didn't realize that yourknowledge was so deep ...

23 posted on 01/23/2010 12:51:56 PM PST by ClearCase_guy (We have the 1st so that we can call on people to rebel. We have 2nd so that they can.)
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To: Richard Kimball
The double hull significantly increases size and weight.

Larger size and weight is not a major concern for the Russian sub builders, because they believe a larger sub is more survivable.

For example, the Oscar II class SSGN (nuclear cruise missile submarine). Its heavy displacement and double hull enables her to take three direct torpedo hits to sink.

The outer hull acts as an armored shell, much like a turtle shell for a turtle.

24 posted on 01/23/2010 12:54:53 PM PST by myknowledge (F-22 Raptor: World's Largest Distributor of Sukhoi parts!)
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To: Richard Kimball

wow, that’s high tech! the Amish will be jealous... if they ever see it.


25 posted on 01/23/2010 12:55:22 PM PST by lack-of-trust
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To: CharlesWayneCT
An American sub ran into an underground mountain and survived. It’s hull was torn open. How do you think it survived?

One man lost. We build 'em good here.


26 posted on 01/23/2010 12:57:01 PM PST by Al B.
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To: myknowledge

Why doesn’t the Navy have supercaving torpedos?


27 posted on 01/23/2010 12:58:25 PM PST by Perdogg ("Is that a bomb in your pants, or are you excited to come to America?")
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To: mylife

I love all of these Navy threads. Brings me back, ya know?


28 posted on 01/23/2010 1:02:20 PM PST by RandallFlagg (30-year smoker, E-Cigs helped me quit, and O wants me back smoking again?)
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To: Perdogg

You mean the 200 knot Skhvals?

29 posted on 01/23/2010 1:03:25 PM PST by myknowledge (F-22 Raptor: World's Largest Distributor of Sukhoi parts!)
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To: Al B.

I wonder what happened to the sub commander and how quickly he was ‘retired’.


30 posted on 01/23/2010 1:03:52 PM PST by MSF BU (++)
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To: RandallFlagg

Now lets all sing “barnacle bill the sailor”


31 posted on 01/23/2010 1:04:52 PM PST by mylife (Opinions: $1.00 Halfbaked: 50c)
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To: myknowledge

From what I have observed from living in Russia and an ex-soviet republic, it is obvious the Russians did not get really excited about calculating “strength of materials”. Probably because one never knew if the material produced was going to be consistent in specs. So the mentality was just to throw more material at the project and hope for the best.

I am surprised they didn’t build subs with 3 hulls.


32 posted on 01/23/2010 1:05:45 PM PST by flash2368
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To: MSF BU

Don’t remember. I’m sure he went away quietly despite the chart problems. The mountain wasn’t on it, as I recall.


33 posted on 01/23/2010 1:08:18 PM PST by Al B.
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To: myknowledge
Why single and not double hulled?..

Ans; BECAUSE the right torpedo will kill you just as dead.. and 2 hulled is way more expensive.. heavy.. requiring much more power to power them.. which makes more noise.. with more possible cavitation(noise).. making them glorified ANCHORS.. in a shooting war..

**Better; unmanned armed unwater vehicles like the predator except under water.. controlled by an attack sub.. or surface craft.. or BOTH...

34 posted on 01/23/2010 1:08:57 PM PST by hosepipe (This propaganda has been edited to include some fully orbed hyperbole....)
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To: myknowledge

the Russians claim that the “double hull enables her to take three direct torpedo hits to sink”

Has the US Navy ever tested that theory?

I remember in the 80’s the Brits sent an Argentine warship (a cruiser, fromerly CL-46) to the bottom with a pair of WWII vintage torpedos.


35 posted on 01/23/2010 1:12:40 PM PST by lack-of-trust
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To: myknowledge

or German Barakuda


36 posted on 01/23/2010 1:15:37 PM PST by Perdogg ("Is that a bomb in your pants, or are you excited to come to America?")
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To: LS
Maybe Electric Boat could take some lessons from the design philosophies of the Alfa and Mike class SSNs and try to design a next-generation experimental SSN that can reach speeds of 65 knots and depths of up to 1500 meters (4920 feet)...

...or is it just too unrealistic?

37 posted on 01/23/2010 1:15:41 PM PST by myknowledge (F-22 Raptor: World's Largest Distributor of Sukhoi parts!)
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To: Richard Kimball

Awww, geeeze! That’s a poor little Zaparozhets!


38 posted on 01/23/2010 1:16:15 PM PST by Jimmy Valentine (DemocRATS - when they speak, they lie; when they are silent, they are stealing the American Dream)
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To: All

I defer to the experts here and only seek knowledge, but is has been my understanding that single hull or double didn’t matter, because direct hits aren’t necessary to sink subs; that only an explosion proximal to the screw(s) would unseat the seals causing catastrophic flooding.

Or a hairline crack at depth would cause immediate implosion of that section of the hull.


39 posted on 01/23/2010 1:18:12 PM PST by Molon Labbie
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To: lack-of-trust
You mean HMS Conqueror sinking the ARA General Belgrano (ex-USS Phoenix CL-46) in the Falklands War?

The General Belgrano was a cruiser, not a cruise missile submarine. The hulls of surface vessels and subs are different.

40 posted on 01/23/2010 1:21:13 PM PST by myknowledge (F-22 Raptor: World's Largest Distributor of Sukhoi parts!)
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