[ericmay]

> ships move means nothing at all, the missiles are tracking the ships with radar. missile defence shoots down some missiles yes, but usually the idea with these types of attacks is overwhealimg air defence systems with volume of fire, so you fire on the order of 30 missiles at once, and use a probabalistic attack to ensure one or two make it through

I think you're misunderstanding how these missile systems work and overestimating their ability to "lock on" - it's not a video game where they have near-perfect accuracy.

> Hypersonic boost glide missiles can manouver sharply, travel at speeds of up to mach 5, have next to no radar signature, and can time their attacks and manouver such that they come at a carrier group from all angles at once.

Launch of these missiles can be detected by U.S. space-based assets via their thermal signatures, so the CSG would probably know they are coming (obviously anything can happen in war and maybe this doesn't happen, but it's likely to be detected).

Once detected the CSG can begin evasive maneuvers - spreading out for example. These ships are pretty quick and even small course adjustments may render the missiles ineffective. While the hypersonic missiles can adjust in-flight somewhat, it's much more difficult to be accurate with them. Think about it - they're launching missiles from hundreds of miles away to hit tiny ships in a gigantic ocean at a high rate of speed and those ships can shoot some of the missiles down (or at least the research is being done) and move around. It's difficult for the missile to adjust.

Think about it like this: China launches these missiles, and they're very fast but they're detected. USN ships start immediate evasive maneuvers. They don't have much time, but the missile is so fast it also doesn't have much time to adjust. It's never "locked on" in any sense you may be thinking. So can the ships get out of the way? A near miss might as well be a miss by a million miles. It remains to be seen.

There's also something to consider that they aren't cheap, and there aren't very many of them. These aren't simple cruise missiles, and a Chinese launch of such hypersonic missiles is likely to not be a repeatable attack - even so you open the launch sites up to response from the CSG or air assets from other locations. In many war game scenarios I've read, China essentially launches all of the missiles and damages USN assets in the region, but the U.S. just brings more while also retaliating and destroying Chinese assets. A quick and violent war is the best hope that China has (maybe the U.S. will back down) - but long term it loses a war of attrition based on the chess pieces and what's on the board.

So even if China launched missiles and they were wildly successful, it's not going to end the war but at best buy China some time and a moral victory.

Overall, I highly question the ability of Chinese capabilities to effectively track and put missiles on targets. These capabilities will probably improve over time (unless the Chinese nation collapses due to economic factors) which will basically mean that the U.S. will think twice before attacking China due to a serious concern about damage to naval assets.

> The department of defence has said several times that hypersonics are their "top priority". Just because you don't hear them besides themselves in the media doesn't mean they aren't seriously concerned, but this kind of thing naturally tends to be kept muted in order to not make it obvious if they are defenceless

When you read articles about the U.S. military "sounding the alarm" I would not take that at face value.

As an aside - if you're interested in further reading the Rand Corporation and others put out some pretty fascinating in-depth discussions about topics like these.

[RugnirViking]

Missiles are not targeted at a location. They absolubtely do "lock on" and can track a moving target. They would simply not be able to function if that were not that case. Why even use a missile at all if it worked like that, just fire a big gun. Sure there are countermeasures, but manouvering a ship won't do anything on its own. The only way things like that help is when combined with chaff or heat signature dummies.

What makes you think that tracking a ship the size of a skyscraper would be difficult but that tracking a missile would be easy? Yes, the US satelite network will soon be able to detect this type of missile launches, they are working on that capability right now - I never said ships wouldn't know that they are coming, just that there is little they can do with that information if more than one or two missiles are launched.

You seem to be vastly underestimating how well these missiles can manouver. They can't adjust "slightly", they can make sharp turns, with many times more g-forces than a regular plane - a ship has no chance to outmanouver them, any manouvers would only be to present a lower profile to a single missile or to try to confuse the missile's tracking system using some other countermeasures

as for reading articles about the millitary "sounding the alarm" how does the dod itself sound https://www.defense.gov/Explore/News/Article/Article/1934290...

Finally cost. Yes these missiles are expensive but that is several orders of magnitude lower than an aircraft carrier. Heck, its orders of magnitude lower than a single plane on that carrier

[ericmay]

> Missiles are not targeted at a location. They absolubtely do "lock on" and can track a moving target. They would simply not be able to function if that were not that case. Why even use a missile at all if it worked like that, just fire a big gun. Sure there are countermeasures, but manouvering a ship won't do anything on its own. The only way things like that help is when combined with chaff or heat signature dummies.

I don't think this is correct with ballistic missiles or these hypersonic missiles - please correct me if I'm wrong. My understanding is that it's not like a fighter jet locking on to a target and firing a missile. When these missiles are fired they are launched into a general area - in this case where the Chinese think the U.S. Navy ships are, and then after that the missiles will lock on to a target as they re-enter the atmosphere - they have a few seconds to adjust course and do so. They can miss.

> You seem to be vastly underestimating how well these missiles can manouver. They can't adjust "slightly", they can make sharp turns, with many times more g-forces than a regular plane - a ship has no chance to outmanouver them, any manouvers would only be to present a lower profile to a single missile or to try to confuse the missile's tracking system using some other countermeasures

What I'm not saying is the U.S. Navy can just run away or something from the missiles once they are in range, but the ships can move and the missiles can miss.

> as for reading articles about the millitary "sounding the alarm" how does the dod itself sound

It doesn't sound like anything - it's no different. These are just reports that come out form the bureaucracy. The DoD sounds the alarm on all sorts of things.

https://www.ausn.org/post/navy-sounds-the-alarm-on-biden-s-d...

> Finally cost. Yes these missiles are expensive but that is several orders of magnitude lower than an aircraft carrier. Heck, its orders of magnitude lower than a single plane on that carrier

Cheaper than a carrier but dunno about planes. Maybe the cost can come down over time if they aren't already cheaper.

Also in the grand scheme of things the US Navy can just stay out of their range and harass supply lines, and then U.S. forces in the region can attack these missile systems and destroy them, then the US Navy can move in.

The main concern really isn't these missiles. They present a problem, of course, because they make it difficult for the U.S. Navy to effectively operate in the region (and by effectively operate we mean unimpeded), but they aren't an ace in the hole or some sort of trump card that the Chinese have.

[hef19898]

Ballistic missiles are things like ICBMs, there it doesn't matter if you miss by a couple of miles. Hypersonic missiles are fast enough to make ship movement a negligible factor, ship are slow.

All other anti-ship missiles are guided. How bad that can end was shown in the Falkland war, the Royal Navy suffered quite a lot from Argentinian Exocets. Bought from France.

A F-35 is what, 35 million dollar plus, excluding the pilot and training cost? Missiles are cheaper, by order of magnitude.

[ericmay]

> Ballistic missiles are things like ICBMs, there it doesn't matter if you miss by a couple of miles. Hypersonic missiles are fast enough to make ship movement a negligible factor, ship are slow.

The hypersonic missiles are like ICBMs though. They operate similarly and enter the atmosphere before coming back down. They’re not nuclear weapons where you can be close enough, they have to be accurate. A miss by 3 feet jug as well be a miss by a mile.

As the missile enters the atmosphere it only has a few seconds to course correct to hit a moving ship. The ship can potentially move just out of harms way. Not the most likely scenario but definitely plausible.

> All other anti-ship missiles are guided. How bad that can end was shown in the Falkland war, the Royal Navy suffered quite a lot from Argentinian Exocets. Bought from France.

Different kinds of missiles. Can’t really compare them.

> A F-35 is what, 35 million dollar plus, excluding the pilot and training cost? Missiles are cheaper, by order of magnitude.

Not sure that these particular missiles are. I think it’s likely they’re closer to $20mm-$30mm in cost. Plus all of the ones China has are basically R&D missiles and not proven.

[hef19898]

Having talked to former and active Navy guys, especially working on this stuff, I can tell you that ship don't dodge shit in a modern environment. They are simply to big and slow. If you can't get rid of the attack by counter-measures or shooting the missile down, the ship will be hit.

[ericmay]

Which makes sense, but the hypersonic missiles are not like regular missiles and are more like ICBMs. There's a small chance that if a ship takes evasive maneuvers the missile will miss because it also has to adjust targeting at the last second.

[RugnirViking]

Typically the way these kinds of missile emplacements work is that first the ships are spotted with a command/radar unit, which then tries to categorise the ships based on their radar "signature" - in this case signature is literal, in the sense that each class of ship and sometimes even within classes has a unique radar reflaction that can be detected. Most major millitaries over the years of shadowing each other have built up databases of each other's craft including radar signatures from every angle. This is then used to prioritise targets and decide on an attack profile - so it's unlikely it would accidentally be launched at say a destroyer. They then send this plan to their missiles which all start their attack independantly, using their onboard radars to follow the target. The usual countermeasures to this like I mentioned involve using chaff, which is little bits of metal foil that are launched into a cloud in the sky, which presents as a big cloud on the enemies radar behind which the missiles cannot see. This is where manouvering may be used, if the missile momentarily cannot see then you may be able to avoid it. However with swarm attacks, which is how these missiles will almost certainly be deployed at least against a target as valuble as a carrier, they come from several directions which makes deploying chaff and/or manouvering very difficult.

I don't claim it's some secret that only china has or anything like that - the US and several other countries have deployed them as well. Its just that the vulnerability of carrier groups to them necessitates a shift in naval strategy closer to "fleet in being" - essentially that capital ships are too valuble to risk losing so are restricted in where they can operate because they are more valuble as a deterrrent than they would be actually fighting - which reduces power projection ability of carriers, similar to what the early 20th century did to battleships

[ericmay]

The issue here is China has no capability to swarm attack with these missiles. They don’t have enough, and they aren’t proven. And once you launch them that’s it. You won’t produce any others to get a second strike. So if you launch them all (China has what, 30?) and sink a CSG, the US just sends 2-4 more and now what? Oh and the US also has aircraft in places like Japan and Korea and Guam that can retaliate.

The Chinese also don’t have a multi-direction launch capability.

The carriers are definitely vulnerable to them in general, but the notion that the carriers are now all of a sudden the same as battleships is an easy and lazy mindset to adopt. “X must be like Y” is a failure in thinking - “oh our startup will just be the Uber for X”. “We’ll be the Amazon of Y industry” etc.

Instead of saying battleships did this thing and then I think these other things will be like them, you should start with the opposite assumption and deduce from that. Assume you’re completely wrong and figure out why carriers aren’t like battleships. It will be an interesting exercise. A good question to ask would be like what’s the point of carriers if there is nothing for the planes to bomb? That makes them actually useless. Even in a scenario where the Chinese are completely capable with these missiles the U.S. fleet can just take over the oceans anyway and then what?

The U.S. has power projection independent of the carrier fleet.

If your views are strongly aligning with what you would hear on Fox News or Reddit you should be very cautious in the certainty in which you hold those views.