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Subject: Steel is cheap and air is free - should the RAn be buying larger hulls?
Volkodav    4/15/2008 8:09:05 AM
Steel is cheap and air is free.

Basically it costs very little more and may infact cost less to build a larger hull for a given task than a small one, so long as the temtation to fill the extra space with expensive toys is resisted.

A good example of this is the ACPB (yes I know they are aluminium not steel). These are significantly larger and more capable than the vessels they replace yet on paper appear to offer little improvement.

Could the same be applied to our major surface combatants, the obvious candidate being the eventual ANZAC replacement?

A large or very large hull (8000 to 12000 tonnes) but stealthy through careful shaping of its hull and superstructure.

It would use a large commercial medium speed marine diesel boosted by gas turbines in an all electric propulsion system with stearable motor pods.

The armament would be similar to the ANZAC's but would include substantially improved avation facilities (maybe even a through deck design) for operating a variety of UCAV's as well as helicopters.

Its boat handling facilities would consist of an extendable rail system from the transom, similar to that in the Danish Absalon support ships, allowing it to operate a variety of manned and unmanned craft as dictated by the mission.

Such a ship would be highly automated with a reduced crew (less than 100) but substantial accomodation for additional personnel as required.

Above all with its increased size it would be highly suvivable, extremely versitile and easily and affordably upgradeable.

Thoughts?
 
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stingray1003       4/20/2008 5:22:33 PM
I think the anzac replacements will sit atop the same displacement hull as the AWD and be more akin to cut down AWD's with a lighter missile load (freeing some space up and reducing costs). May not even a full Aegis setup either (could be expanded at a later date).
 
 Given the LHD's I don't think we will need a huge amount of air facilities on ships. Well not more than they already have. Operating two helos and a small UAV will be fine given the extensive assets Australia already has.
 
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Volkodav       4/22/2008 9:15:56 AM
 
I think the anzac replacements will sit atop the same displacement hull as the AWD and be more akin to cut down AWD's with a lighter missile load (freeing some space up and reducing costs). May not even a full Aegis setup either (could be expanded at a later date).
 
 Given the LHD's I don't think we will need a huge amount of air facilities on ships. Well not more than they already have. Operating two helos and a small UAV will be fine given the extensive assets Australia already has.
 
Fair comments but I was thinking revolution rather than evolution.
 
I know Australia has the tendency to either replace like with like, or to retire capabilities without replacement, but our deteriorating security situation, combined with our demographic challenges suggest we should be looking at ways to dramatically increase our capability.
 
The LHD's are needed as LHD's, in fact if you look at the RAN's requirements we actually need a third LHD the guarantee the desired capability can be delivered.  While they could quite easily operate in an ASW, or MCM role with appropriate helicopters and UCAV's they will likely be too busy in their primary amphibious role the be available for secondary duties.
 
A class of 3 very large through deck destroyers / cruisers operating a mix of Helicopters and UCAV's, even perhaps fixed wing UCAV's would see a massive increase in capability when combined with the 3 AWD's and a class of 6 or so corvettes / frigates (replacing the rest of the ANZAC's).
 
The USN plans to deploy its first carrier based squadron of UCAV's by 2025 so is it so much of a stretch to envision a variety of UAV's and UCAV's being available to the RAN by 2030?  Why go for a conventional frigate when something much better could be built?
 
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Aussiegunneragain    Volkodav   4/23/2008 7:04:56 AM
This guy (www.fas.org/man/dod-101/sys/ship/docs/working1.htm) had similar thoughts to you 9 years ago, though he wanted to cram the bigger hulls full of cruise missiles rather han boosting the number of helecopters and UAV's that we could load up. Personally I think that there is great merit in prioritising an expansion in our surface fleet and boosting our navy's organic air capabilities. We are as much a maritime nation as we ever were, making the convoy escort mission one of our most important (but under-rated). With advanced DE subs, stealthy FAC's and ASM's being likely to proliferate over the timeframe under discussion, it seems to me that we will need to boost our ability to detect and destroy those threats if we are to adequately protect our commercial sea routes and amphibous forces. I see less need to equip the navy with a land-attack missile capability beyond the ability to wallop unfriendly land-based coastal ASM sites located in choke points with our Harpoon 2's and providing fire support with extended range guns. If we were to get a sea-based land attack capability, I'd rather see UCAV's or F-35B's for the flexibility.
 
A
 
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hairy man       5/7/2008 10:34:07 PM
Instead of the RAN getting additional F100 AWD.s I would rather we get a couple of DDG 1000 Zumwalts. These 14'000 ton ships are certainly larger hulls.    They will each have 2 x 155mm guns, 80 VLS in 20 x 4 sets scattered over the ship, two helicopter landing sites, and built for stealth.  The US Navy are to get 7 at this stage, with the first two ordered.  They are expected to cost US$3.3m each for the first two, and by ship 5 expected to cost US$2.3, much the same as our F100 AWD's. 
 
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Herald12345       5/7/2008 10:46:34 PM

Instead of the RAN getting additional F100 AWD.s I would rather we get a couple of DDG 1000 Zumwalts. These 14'000 ton ships are certainly larger hulls.    They will each have 2 x 155mm guns, 80 VLS in 20 x 4 sets scattered over the ship, two helicopter landing sites, and built for stealth.  The US Navy are to get 7 at this stage, with the first two ordered.  They are expected to cost US$3.3m each for the first two, and by ship 5 expected to cost US$2.3, much the same as our F100 AWD's. 

That is BILLION not million.

Would you pay $7 BILLION  Australian for two ships?

For that kind of money you can buy a good FLEET.

Frank
 

 
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Enterpriser       5/8/2008 8:16:27 AM




Instead of the RAN getting additional F100 AWD.s I would rather we get a couple of DDG 1000 Zumwalts. These 14'000 ton ships are certainly larger hulls.    They will each have 2 x 155mm guns, 80 VLS in 20 x 4 sets scattered over the ship, two helicopter landing sites, and built for stealth.  The US Navy are to get 7 at this stage, with the first two ordered.  They are expected to cost US$3.3m each for the first two, and by ship 5 expected to cost US$2.3, much the same as our F100 AWD's. 



That is BILLION not million.

Would you pay $7 BILLION  Australian for two ships?

For that kind of money you can buy a good FLEET.

Frank
 


Franky, my dear, I don't give a damn! (sorry, had too :P )
 
On a more serious note:
 
I think the point that was being made was that if three AWDs are going to cost us 8 Billion Australian Dollars (unless we get to > $1AUS = $1US) then what is the difference with 2.5 Billion dollar DDG1000s? Obviously the crewing requirements etc are different and would probably knock it out of the realms of reality, but the money scenario doesn't seem much different. I am not fully convinced that those figures are correct (they probably are more expensive than that) - its just that those are the types of figures justifying the above logic. Personally, I'd like 5 F100s (still wondering if there is anywhere left to cram extra VLS).
 
Brett.

 
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hairy man       5/8/2008 9:31:43 AM
Sorry everyone.  Cant tell the difference between Million and Billion, both out of my range.  Anyway, the point was they are comparably priced at this stage.  Dont know if they will be in reality.
 
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Herald12345       5/8/2008 12:22:34 PM
 


Franky, my dear, I don't give a damn! (sorry, had too :P )

Well................................ you should. Money is a resource.

On a more serious note:

Lets see. 

I think the point that was being made was that if three AWDs are going to cost us 8 Billion Australian Dollars (unless we get to > $1AUS = $1US) then what is the difference with 2.5 Billion dollar DDG1000s? Obviously the crewing requirements etc are different and would probably knock it out of the realms of reality, but the money scenario doesn't seem much different. I am not fully convinced that those figures are correct (they probably are more expensive than that) - its just that those are the types of figures justifying the above logic. Personally, I'd like 5 F100s (still wondering if there is anywhere left to cram extra VLS).

1. The Zumwalts will be more like $3.5 billion US not $2.5 billion US.
2. Numbers still count.
3. Its a BIG ocean.
4. Reiterate 2 in light of 3.
Brett.
And since I'm paying for Zumwalts: I do give a damn.

Herald



 
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Enterpriser       5/8/2008 10:26:27 PM

 





Franky, my dear, I don't give a damn! (sorry, had too :P )



Well................................ you should. Money is a resource.



On a more serious note:



Lets see. 



I think the point that was being made was that if three AWDs are going to cost us 8 Billion Australian Dollars (unless we get to > $1AUS = $1US) then what is the difference with 2.5 Billion dollar DDG1000s? Obviously the crewing requirements etc are different and would probably knock it out of the realms of reality, but the money scenario doesn't seem much different. I am not fully convinced that those figures are correct (they probably are more expensive than that) - its just that those are the types of figures justifying the above logic. Personally, I'd like 5 F100s (still wondering if there is anywhere left to cram extra VLS).



1. The Zumwalts will be more like $3.5 billion US not $2.5 billion US.

2. Numbers still count.
3. Its a BIG ocean.
4. Reiterate 2 in light of 3.

Brett.
And since I'm paying for Zumwalts: I do give a damn.

Herald






Herald, it's not me you need to convince - as I said, my preference is for 5F100s (5 if we could ever find the crew -some extra VLS cramned somewhere would be cool too).  
Brett.
 
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Volkodav       5/9/2008 5:50:35 AM
Interestingly the early ANZAC's are rumoured to be wearing out faster than expected due their high operational tempo and as a result may not be worth upgrading.  As the AWD's have a similar sized crew to the ANZAC's it may work out to be more economical to build an additional couple of AWD's than it would to upgrade shagged ANZAC hulls that would have to be retired after less than another decade service.
 
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