00X/004 future nuclear CATOBAR carrier thread

weig2000

Captain
I would say a better question is -- do we think that the configuration of 003 (leaving aside propulsion) represents the exact "final endgoal configuration" that the PLAN would be content with mass producing for the next few decades, or whether there are aspects of 003's configuration that was limited by certain factors (such as propulsion system type, the limitations of the conventional propulsion system that they are capable of designing and adapting to 003, power generation for catapults, and risk reduction)?


To answer your question:
No, of course those factors are not exclusive to whether a carrier is nuclear powered or not (given Kitty Hawk class and Forrestal class has those features in one way or another despite being conventionally powered), however in the case of 003, various factors such as technological limitations (risk reduction from both design and technological pov as well as limitations of power generation for EM catapults) are likely reasons for why they didn't go for a 100,000 ton carrier with 4 catapults and 3-4 elevators.

The reason they "didn't elect to pursue such a ship for 003, I suspect was partly out of choice and partly out of necessity/conservatism.

Pursuing such a large ship as their first wholly indigenous CATOBAR carrier would not only have been more technologically challenging and accordingly more complex and more ambitious, but it would have also placed higher demands on the conventional propulsion train (which they may not have been able to fulfill).


In contrast, for their inevitable CVN class, it would make sense to use the opportunity to realize a more optimized carrier design with substantially less compromises -- one that is worthy of mass production with a potential double digit production run in the long term.
The alternative, is that they decide to be even more cautious and iterative, and literally pursue a nuclear powered carrier based off 003's configuration, and then only pursue a larger and more optimized design after building one or two CVNs based off 003's exact configuration.


But if you're asking me whether the 003 configuration is one that is ideal for the PLAN? Certainly not. There remain a significant number of compromises. 003 is a massive advancement from CV-16/17, and puts it in spitting distance of the configuration of USN CVNs yes -- but there remains obvious changes and additions that can produce meaningful improvements.

I think Ford Class is a good template in terms of size, displacement and configuration for the future PLAN CVN supercarriers with today's technologies, given USN's vast experiences in operating various carriers and pursuing optimal designs amongst various tradeoffs over many decades. Not to say PLAN should build a carbon copy of Ford Class, but it would be a good reference and benchmark.
 

Blitzo

Lieutenant General
Staff member
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I think Ford Class is a good template in terms of size, displacement and configuration for the future PLAN CVN supercarriers with today's technologies, given USN's vast experiences in operating various carriers and pursuing optimal designs amongst various tradeoffs over many decades. Not to say PLAN should build a carbon copy of Ford Class, but it would be a good reference and benchmark.

I agree.

The USN's iterative process for their supercarriers from Forrestal to Ford across the decades show various improvements and tweaks, all of which make sense imo.
It would be foolish for the PLAN to not study them closely, and arrogant to think that the 003 in its present configuration is a reflection of the PLAN assessing it as the "best" configuration for the PLAN rather than a reflection of various other mitigating factors that existed in the recent past (technological limitations, design conservatism, iterative risk reduction).

These CGIs from 大包 I think are a good representation of what a notional 004 CVN could look like, in a manner where it is clearly derived and developed from 003, but makes various other modifications and configuration choices from Ford which makes sense.

h7qyTvn.jpg


mNdeqT2.jpg


QKJnQqg.jpg
 

Helius

Senior Member
Registered Member
I would say a better question is -- do we think that the configuration of 003 (leaving aside propulsion) represents the exact "final endgoal configuration" that the PLAN would be content with mass producing for the next few decades, or whether there are aspects of 003's configuration that was limited by certain factors (such as propulsion system type, the limitations of the conventional propulsion system that they are capable of designing and adapting to 003, power generation for catapults, and risk reduction)?


To answer your question:
No, of course those factors are not exclusive to whether a carrier is nuclear powered or not (given Kitty Hawk class and Forrestal class has those features in one way or another despite being conventionally powered), however in the case of 003, various factors such as technological limitations (risk reduction from both design and technological pov as well as limitations of power generation for EM catapults) are likely reasons for why they didn't go for a 100,000 ton carrier with 4 catapults and 3-4 elevators.

The reason they "didn't elect to pursue such a ship for 003, I suspect was partly out of choice and partly out of necessity/conservatism.

Pursuing such a large ship as their first wholly indigenous CATOBAR carrier would not only have been more technologically challenging and accordingly more complex and more ambitious, but it would have also placed higher demands on the conventional propulsion train (which they may not have been able to fulfill).


In contrast, for their inevitable CVN class, it would make sense to use the opportunity to realize a more optimized carrier design with substantially less compromises -- one that is worthy of mass production with a potential double digit production run in the long term.
The alternative, is that they decide to be even more cautious and iterative, and literally pursue a nuclear powered carrier based off 003's configuration, and then only pursue a larger and more optimized design after building one or two CVNs based off 003's exact configuration.


But if you're asking me whether the 003 configuration is one that is ideal for the PLAN? Certainly not. There remain a significant number of compromises. 003 is a massive advancement from CV-16/17, and puts it in spitting distance of the configuration of USN CVNs yes -- but there remains obvious changes and additions that can produce meaningful improvements.
Thanks for the well-elaborated response.

To be clear, my query stemmed more from referencing the French Navy's own PANG programme, most notably of course is that the PANG will be a significantly larger hull than the CDG with over 75% projected increase in displacement to boot (75,000 tonnes vs 42,500 tonnes), which 004 will most certainly not have such huge mark up in tonnage over 003.

And yet with that in mind the MN still opted to retain the '2 + 2' config moving forward, even though the PANG is more than capable of hosting additional ones, certainly three cats instead of two at the very least.

The only sensible rationale I could discern, other than the always present cost considerations, is that the MN has found their current approach to carrier operations as reflected in the design and layout of current and future French CVNs the most optimised and ideal for their operational needs.

So I guess my bias is that while the USN has decided upon the '4 (cats) + 3 (elevators)' as some sort of a benchmark for optimal layout on an US Navy CVN of 100,000-tonne calibre, while keeping in mind the Americans themselves have also gone from decades of having 4 elevators in various sections of the deck/hull until they settled on the current config with the Nimitz class and now the Ford class, the question then becomes - is that already the 'most optimal' layout? Is there no room for improvement still? Of course not.

I'm sure the PLAN has evaluated this extensively. The likelihood remains, like you said, such allowances/compromises are outweighed by the PLAN's desire to be more 'conservative' with how they run their carriers as reflected in 003's design.

The possibility also remains, not ruling out future iterations and refinements as the Chinese carrier programme continues to mature, as the USN has done so, it could just as well be that the doctrines developed from operating 001 + 002 for a combined period of 12 years now may end up being the best course for the PLAN to follow, as evidenced by 003's design, and possibly for future hulls as well, nuclear or otherwise, not for averting the risk of 'doing too much too fast', but that 'it's already sufficient'.
 

Blitzo

Lieutenant General
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Thanks for the well-elaborated response.

To be clear, my query stemmed more from referencing the French Navy's own PANG programme, most notably of course is that the PANG will be a significantly larger hull than the CDG with over 75% projected increase in displacement to boot (75,000 tonnes vs 42,500 tonnes), which 004 will most certainly not have such huge mark up in tonnage over 003.

And yet with that in mind the MN still opted to retain the '2 + 2' config moving forward, even though the PANG is more than capable of hosting additional ones, certainly three cats instead of two at the very least.

The only sensible rationale I could discern, other than the always present cost considerations, is that the MN has found their current approach to carrier operations as reflected in the design and layout of current and future French CVNs the most optimised and ideal for their operational needs.

So I guess my bias is that while the USN has decided upon the '4 (cats) + 3 (elevators)' as some sort of a benchmark for optimal layout on an US Navy CVN of 100,000-tonne calibre, while keeping in mind the Americans themselves have also gone from decades of having 4 elevators in various sections of the deck/hull until they settled on the current config with the Nimitz class and now the Ford class, the question then becomes - is that already the 'most optimal' layout? Is there no room for improvement still? Of course not.

Absolutely, it certainly goes without saying that the configuration and fitout of a carrier (and indeed, any warship) is a reflection of the way in which a Navy seeks to operate it, as well as the overall funding available to a given navy and where they are willing to spend more money on and where they are willing to cut down on costs in exchange for meeting a given threshold of capbability.

The PANG as a 75,000 ton carrier with two catapults and two large elevators is a reflection of the MN's own requirements and funding availability.


I suppose the question you are basically asking in relation to 003 and a future 004 CVN, is where the 004's carrier uppermost bound of carrier flight deck operational flexibility and potential might be.
My answer, is that I do not believe that the PLAN would be willing to seriously mass produce a configuration of a carrier that is inferior to that of USN supercarriers.


I'm sure the PLAN has evaluated this extensively. The likelihood remains, like you said, such allowances/compromises are outweighed by the PLAN's desire to be more 'conservative' with how they run their carriers as reflected in 003's design.

The possibility also remains, not ruling out future iterations and refinements as the Chinese carrier programme continues to mature, as the USN has done so, it could just as well be that the doctrines developed from operating 001 + 002 for a combined period of 12 years now may end up being the best course for the PLAN to follow, as evidenced by 003's design, and possibly for future hulls as well, nuclear or otherwise, not for averting the risk of 'doing too much too fast', but that 'it's already sufficient'.

Operating 001 and 002 certainly would have benefitted PLAN requirements for their future carrier designs (and likely would've already informed their ongoing or what I suspect to be recently completed design work for the 004 CVN).

But, if you're suggesting 003's design benefitted from operating 001 and 002, that probably is not the case.
Liaoning was commissioned in 2012, Shandong was commissioned in 2019.
Initial steel cutting for 003 began in 2017 or slightly earlier from memory, meaning the overall design of the carrier would've been finalized a few years prior to it. It's possible that operation of CV-16 Liaoning between 2012 and 2016-15 over the course of four years had influenced 003's configuration somewhat.... though remember in the first few years, they were simply learning how to do the basics on Liaoning, and almost certainly hadn't raised their level of flight deck expertise to one where they were able to glean sufficient first hand experience to make many nuanced flight deck changes that they wouldn't have already known from years of studying foreign/USN flight decks.
However, I suspect that the design of 003 was probably finalized some years even earlier than that and was likely more informed by PLAN analysis of USN flight deck carrier activities with only minor changes made as informed by activities on Liaoning.


All of which is to say -- I suspect the PLAN already knows what kind of supercarrier it wants and what sort of flight deck and aviation facility fit out it wants, significantly informed by the USN as the world's leading power in carrier aviation, and it would not make sense for them to not pursue a minimum threshold capability that is appropriate for mass production.


It is "possible" that the PLAN would be okay with an inferior capability if they are limited by technology, money or otherwise -- however I find it very difficult to entertain the idea that they would be satisfied with a mass produced carrier configuration, that is deliberately inferior to a competing carrier configuration whose use has already been well proven by decades of service in the USN -- if they had the technology and the money and sufficient risk mitigation completed.

The 003 gets very close to approaching the "ideal carrier flight deck" configuration that can be presently attainable with contemporary technologies, and all on the PLAN's first try.
It is limited only by a few things, namely:
- island size/placement which is dependent on ship's conventional propulsion
- catapult count which is likely limited by power generation and flight deck size
- elevator count and catapult positioning which is limited by the ship's overall and flight deck length aka the ship's overall size

Considering how much else they got right with 003's flight deck configuration, for the life of me I cannot see why they wouldn't seek to iterate on the 003's configuration and tweak it in a notional 004 CVN, especially if the 004 becomes the design intended for mass production and given the lifespan for which carriers will operate for.
 

FairAndUnbiased

Brigadier
Registered Member
With how modular shipbuilding is these days wouldn't they only need to design the reactor sections and import the 003 schematic for the rest of the carrier to save on time? If they needed to further modify from there the 003 design is there as a baseline so you don't have to start from scratch.
without IEP the ship has to be arranged around the shafts.

if you have to arrange around the shafts then you need to know engine size, which is different in both size and sahpe for reactor vs. combustion (i.e. reactor needs shielding but combustion needs fuel tanks). with combustion you also need to consider air intake, fuel intake and exhaust vents. these in turn require auxiliary gear like fuel pumps, air intake fans, exhaust stack that runs through the ship and flight deck, etc. so you have to design from the bottom up.
 

Red tsunami

Junior Member
Registered Member
No, of course those factors are not exclusive to whether a carrier is nuclear powered or not (given Kitty Hawk class and Forrestal class has those features in one way or another despite being conventionally powered), however in the case of 003, various factors such as technological limitations (risk reduction from both design and technological pov as well as limitations of power generation for EM catapults) are likely reasons for why they didn't go for a 100,000 ton carrier with 4 catapults and 3-4 elevators.
Why not 100,000-ton class? I think you underestimated the displacement of 003. Smaller waterline length than Ford class doesn't mean anything, because beam(waterline), draft, and block coefficient also affect displacement.
 

Blitzo

Lieutenant General
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Why not 100,000-ton class? I think you underestimated the displacement of 003. Smaller waterline length than Ford class doesn't mean anything, because beam(waterline), draft, and block coefficient also affect displacement.

003 has a slightly narrower waterline beam than Ford as well as being shorter by some 15 meters.

It's technically not impossible that 003 might displace 100,000 tons, but it is unlikely given what we know of its external key dimensions.
Also, if 003 did displace that much I have a feeling we would've gotten hints of such a threshold being reached from the usual grapevine as well.


I don't want to quibble over whether 003 might have a chance of displacing 100,000 tons, and frankly that sort of quibbling comes across as insecure.


If it's so important, then just interpret the "100,000 ton" number as "40-41m waterline beam and 330m+ long overall" carrier instead. Either way, a carrier that is slightly bigger than 003.
 

Intrepid

Major
We don't know if the Chinese made the decision to have 300,000 tons of aircraft carrier mass in one ban, 4 x 75,000 tons is better than 3 x 100,000 tons. Airplanes and drones are getting smaller because fewer crews need to be on board.

And: 4 x 3 catapults is the same as 3 x 4 catapults.
 
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