New (not totally) sailless SSN (09X?) thread

latenlazy

Brigadier
Virginia SSNs need minimal deployment support.

The worst case scenario is 9 days at 20 knots from Hawaii to China, and another 9 days for the return journey, out of 90 days endurance.
You’re not achieving much with that sort of turnaround time between operations lol. PACOM positional attrition from Chinese A2AD strikes will move far faster than whatever damage you can achieve with 30-40 submarines launching 24 missiles every 20 days assuming no effective suppression of operational cadence from Chinese ASW.
 

tphuang

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As I said, “the US obviously cannot teleport boats out of maintenance.” In other words, any deployable SSN in an existential US–China war would almost certainly be concentrated into the primary theater rather than left scattered around the globe for peacetime-style presence missions.

The same logic applies across the entire US military, not just the USN.

That is why I disagree with the “global commitments” or “spread out” argument. From the perspective of a Chinese war planner, it would be a huge mistake to assume that the US would still keep its forces globally dispersed during an existential conflict. In a decisive war, the expectation should be that the US would concentrate the overwhelming majority of its deployable combat power into the primary theater.
As I said, “the US obviously cannot teleport boats out of maintenance.” In other words, any deployable SSN in an existential US–China war would almost certainly be concentrated into the primary theater rather than left scattered around the globe for peacetime-style presence missions.

The same logic applies across the entire US military, not just the USN.

That is why I disagree with the “global commitments” or “spread out” argument. From the perspective of a Chinese war planner, it would be a huge mistake to assume that the US would still keep its forces globally dispersed during an existential conflict. In a decisive war, the expectation should be that the US would concentrate the overwhelming majority of its deployable combat power into the primary theater.
I will respond since this was replied to me.

What is the operational support infrastructure in APAC region for these submarines if China understands what's coming & destroys supporting bases in the region?

What is the role of US submarines? Is it to just come in fire off the missiles and scoot back to base to reload. Keep in mind, you have to elevate to periscope depth in order to fire cruise missiles, so once you fire, your immediate position is exposed. You'd have to probably be within 800nm of China's coast lines, so it is very likely you are within flying distance of a Chinese MPA or ASW helicopter. Keep that in mind.

Or is your goal to prevent Chinese nuclear submarines from existing 1IC and getting into position.f

So the latter part is the critical one that I was pointed to with 09X. If your sub is quiet enough & USN during peace time does not have the asset to actually tail Chinese subs as they cross 1IC (where SOSUS and other trip wire are), they are then basically free to go wherever they want.

So as such, peace time sub ratio in APAC region is a big deal. Chinese subs dealing with 25 USN subs right next to them during peace time is entirely different than facing 6-8 (half of which are LA class).

Having enough 09X means you can have them using those big sensors to look for USN subs between 1st and 2nd island chain. You can have them go even further to close to where the USN subs are resting in docks in west coast and Hawaii. So that when they leave, your subs can tail them. These all make huge difference.

China never really had subs that are quiet enough to get into open ocean and keep up with American subs. It's possible that 093B is the first to potentially be able to do so.

But something like 09X would be quieter and can go quietly at very high speed to really tail US subs.
 

AndrewS

Brigadier
Registered Member
You’re not achieving much with that sort of turnaround time between operations lol. PACOM positional attrition from Chinese A2AD strikes will move far faster than whatever damage you can achieve with 30-40 submarines launching 24 missiles every 20 days assuming no effective suppression of operational cadence from Chinese ASW.

The vast majority of SSNs wouldn't be primarily tasked with missile attacks.

It's more like 30 Virginia/Los Angeles launching 20 torpedoes each. That's a total of 600 torpedoes, before they have to reload.
 

latenlazy

Brigadier
The vast majority of SSNs wouldn't be primarily tasked with missile attacks.

It's more like 30 Virginia/Los Angeles launching 20 torpedoes each. That's a total of 600 torpedoes, before they have to reload.
Torpedoes are short range weapons, and ship hunting is a much longer turnaround lower leverage mission than land attack is. It’s also not like torpedoes are sure fire kills these days. There’s a reason blue water fleets have air complements.

The PLAN’s blue water expeditionary capabilities are not why US CVGs aren’t survivable within 1000 km of China. If you’re not meaningfully solving that part of the equation the submarine force isn’t doing anything strategically meaningful.
 

AndrewS

Brigadier
Registered Member
Torpedoes are short range weapons, and ship hunting is a much longer turnaround lower leverage mission than land attack is. The PLAN’s blue water expeditionary capabilities are not why US CVGs aren’t survivable within 1000 km of China. If you’re not meaningfully solving that part of the equation the submarine force isn’t doing anything strategically meaningful.

The thing with US submarines launching land-attack Tomahawks is that I think these are going to be shot down, given the density of AWACs, fighters and SAMs along coastal China.

In such a scenario, ship/submarine hunting is what US submarines will mostly be doing. And this is strategically useful to keep the Chinese Navy contained.
 

latenlazy

Brigadier
The thing with US submarines launching land-attack Tomahawks is that I think these are going to be shot down, given the density of AWACs, fighters and SAMs along coastal China.

In such a scenario, ship/submarine hunting is what US submarines will mostly be doing. And this is strategically useful to keep the Chinese Navy contained.
Sure, but if you’re just talking about using submarines to use them there’s not much to discuss. US subs sinking some PLAN ships at a tedious pace while Guam and Kadena and Yokosuka get turned into rubble in a matter of weeks is not exactly a meaningful point of discussion.
 

latenlazy

Brigadier
I will respond since this was replied to me.

What is the operational support infrastructure in APAC region for these submarines if China understands what's coming & destroys supporting bases in the region?

What is the role of US submarines? Is it to just come in fire off the missiles and scoot back to base to reload. Keep in mind, you have to elevate to periscope depth in order to fire cruise missiles, so once you fire, your immediate position is exposed. You'd have to probably be within 800nm of China's coast lines, so it is very likely you are within flying distance of a Chinese MPA or ASW helicopter. Keep that in mind.

Or is your goal to prevent Chinese nuclear submarines from existing 1IC and getting into position.f

So the latter part is the critical one that I was pointed to with 09X. If your sub is quiet enough & USN during peace time does not have the asset to actually tail Chinese subs as they cross 1IC (where SOSUS and other trip wire are), they are then basically free to go wherever they want.

So as such, peace time sub ratio in APAC region is a big deal. Chinese subs dealing with 25 USN subs right next to them during peace time is entirely different than facing 6-8 (half of which are LA class).

Having enough 09X means you can have them using those big sensors to look for USN subs between 1st and 2nd island chain. You can have them go even further to close to where the USN subs are resting in docks in west coast and Hawaii. So that when they leave, your subs can tail them. These all make huge difference.

China never really had subs that are quiet enough to get into open ocean and keep up with American subs. It's possible that 093B is the first to potentially be able to do so.

But something like 09X would be quieter and can go quietly at very high speed to really tail US subs.
This commentary does raise an interesting point that it might be time to stop seeing Chinese submarine development as only about conventional strategic assets for a high intensity conflict but also in the terms of regularized old school Cold War counter-nuclear capabilities.
 

AndrewS

Brigadier
Registered Member
I will respond since this was replied to me.

What is the operational support infrastructure in APAC region for these submarines if China understands what's coming & destroys supporting bases in the region?

What is the role of US submarines? Is it to just come in fire off the missiles and scoot back to base to reload. Keep in mind, you have to elevate to periscope depth in order to fire cruise missiles, so once you fire, your immediate position is exposed. You'd have to probably be within 800nm of China's coast lines, so it is very likely you are within flying distance of a Chinese MPA or ASW helicopter. Keep that in mind.

Or is your goal to prevent Chinese nuclear submarines from existing 1IC and getting into position.f

So the latter part is the critical one that I was pointed to with 09X. If your sub is quiet enough & USN during peace time does not have the asset to actually tail Chinese subs as they cross 1IC (where SOSUS and other trip wire are), they are then basically free to go wherever they want.

So as such, peace time sub ratio in APAC region is a big deal. Chinese subs dealing with 25 USN subs right next to them during peace time is entirely different than facing 6-8 (half of which are LA class).

Having enough 09X means you can have them using those big sensors to look for USN subs between 1st and 2nd island chain. You can have them go even further to close to where the USN subs are resting in docks in west coast and Hawaii. So that when they leave, your subs can tail them. These all make huge difference.

China never really had subs that are quiet enough to get into open ocean and keep up with American subs. It's possible that 093B is the first to potentially be able to do so.

But something like 09X would be quieter and can go quietly at very high speed to really tail US subs.

The US using submarines to launch land-attack missiles is really inefficient. Especially since they have other options from local bases.

---

And with enough 09X, instead of them actively looking for US submarines, I think it's better to deploy them against potential targets, which forces US submarines to defend.

For example, the US typically has 2 carrier groups plus an LHD deployed.
If China assigns an SSN to each of these noisy, visible targets, the US will likely deploy an SSN to defend.

Then China could assign a submarine (SSN/SSGN?) to San Diego, Seattle and Hawaii. So the US would likely deploy SSNs to counter.

That would tie up 6 submarines each from the Chinese Navy and US Navy.
Note this completely ties up the 6 US SSNs (out of 50) which are typically deployed at any time.

---

From the Chinese perspective, the Chinese Navy would likely want SSNs to escort its own carriers and LHDs, along with a few for the Indian Ocean and also Westpac generally.

So that is already 10+ deployed Chinese submarines at any time, which implies a fleet of 80+ nuclear-powered submarines.

---

Whilst the US typically has 6 US SSNs deployed at any time, they could surge 20+ with very short notice

It means that if there is a deployment surge by the US submarines, the lone Chinese submarines outside the bases will be overwhelmed by the number of outgoing US submarines who will disappear into the open ocean.

In response, I think we would see some of the Chinese SSNs form a screen (somewhere between the 1IC and 2IC) because we know what is the final destination of the US submarines.

The screen can also be supported by MPA/fighters from land-bases and aircraft carriers, and this is a far enough distance to manage submarine launched missiles.
 

para80

Junior Member
Registered Member
Said it before, will say it again. Do take the "sailless" aspect with grains of salt. End of the day people discuss a limited number of images, and its very easy to jump to some conclusions. I would also strongly caution on deep dives (pun intended) into this or that capability goal based on what right now is super scarce imagery.

Finally, I think people need to come around on the notional Type 041 and the "hybrid" aspect. Which I think (!) is also vastly overstated. Its entirely possible/plausible/likely that both Wuchang and JN will fully transition to SSN production (or any sorts of nuclear powered designs). As I mention elsewhere, how the supply chain supporting construction works remains to be seen.
 

tphuang

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Said it before, will say it again. Do take the "sailless" aspect with grains of salt. End of the day people discuss a limited number of images, and its very easy to jump to some conclusions. I would also strongly caution on deep dives (pun intended) into this or that capability goal based on what right now is super scarce imagery.

Finally, I think people need to come around on the notional Type 041 and the "hybrid" aspect. Which I think (!) is also vastly overstated. Its entirely possible/plausible/likely that both Wuchang and JN will fully transition to SSN production (or any sorts of nuclear powered designs). As I mention elsewhere, how the supply chain supporting construction works remains to be seen.
Sorry, what do you mean by Type 041 and "hybrid" aspect?

This commentary does raise an interesting point that it might be time to stop seeing Chinese submarine development as only about conventional strategic assets for a high intensity conflict but also in the terms of regularized old school Cold War counter-nuclear capabilities.
well not just counter nuclear. It is possible you would want it to tail SSGNs also. Although obviously that won't come for a while.
Then China could assign a submarine (SSN/SSGN?) to San Diego, Seattle and Hawaii. So the US would likely deploy SSNs to counter.
Well, there is always going to be SSNs protecting a large US fleet. I'm not sure what you are talking about.

You probably don't care enough about individual SSNs to tail them. SSGN and SSBNs are a different story.

From the Chinese perspective, the Chinese Navy would likely want SSNs to escort its own carriers and LHDs, along with a few for the Indian Ocean and also Westpac generally.

So that is already 10+ deployed Chinese submarines at any time, which implies a fleet of 80+ nuclear-powered submarines.
If I were you, I'd spend less time thinking about things this way

Whilst the US typically has 6 US SSNs deployed at any time, they could surge 20+ with very short notice

It means that if there is a deployment surge by the US submarines, the lone Chinese submarines outside the bases will be overwhelmed by the number of outgoing US submarines who will disappear into the open ocean.
Do you understand how large the Pacific Ocean is?
 
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