this post was submitted on 12 May 2026
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[–] masterspace@lemmy.ca 20 points 1 day ago* (last edited 1 day ago) (3 children)

Let me just leave this here:

South Korea’s ADD showcases new Supercavitating Torpedo at MADEX 2025

ADD said that the development of this supercavitating torpedo is currently about two-thirds complete, and that after further maturing the torpedo’s stabilization control technology, it will finally secure the design and testing technology of the test body.

...The MRXUUV (Mission Reconfigurable eXtra-large Unmanned Underwater Vehicle) currently under development by ADD could serve as testbed.

According to an interview with the ADD chief researcher, the supercavitating torpedo displayed at MADEX 2025 is an actual tested torpedo, designed in size to fit in a UUV, capable of being guided (in the initial phase of the launch, at low speed), and is being developed to sink enemy main surface ships with ultra-high-speed kinetic energy without a warhead.

The publicly released timeline doesn't line up, but the motivations do.

[–] deranger@sh.itjust.works 13 points 1 day ago* (last edited 1 day ago) (2 children)

What would a South Korean torpedo two-thirds of the way through development today have anything to do with a Russian ship sinking off the coast of Spain a year and a half ago?

I’d wager this was Ukraine’s handiwork using conventional or drone weapons.

[–] carpelbridgesyndrome@sh.itjust.works 6 points 1 day ago* (last edited 20 hours ago)

The reactors were bound for North Korean subs giving a pot of mitivation for the South Koreana. The Spanish claimed evidence of a supercavating torpedo strike.

Also the Ukrainians are rarely this mysterious when they blow something up. They are openly at war with Russia and thus don't need to be.

[–] masterspace@lemmy.ca 3 points 1 day ago (2 children)
  1. the article is a year old, so those statements were made at least a year ago, 2) militaries aren't always super up front about their weapons programs timelines 3) the statement specifically said that even though it was "2/3" of the way through development, it had been tested. How do you know this wasn't the test?

It could have been Ukraine, but Ukraine does not have super cavitating torpedoes, so if that's the case the reporting on those and the shape charges must be wrong.

[–] Cethin@lemmy.zip 2 points 4 hours ago
  1. militaries aren't always super up front about their weapons programs timelines

Not only this, but they also love to find reasons to test new weapons designs in real situations. Testing in a lab is great, but you'll never know the real effectiveness until it's used for real.

[–] deranger@sh.itjust.works 1 points 1 day ago (1 children)

What makes you think supercavitating torpedoes are involved at all?

[–] masterspace@lemmy.ca 1 points 1 day ago (1 children)

That's what Spain's investigation thought was most likely

[–] deranger@sh.itjust.works 3 points 1 day ago* (last edited 1 day ago) (1 children)

Fair enough.

The investigation proposes the 50cm by 50cm hole in the Ursa Major’s hull would likely have been made by a Barracuda supercavitating torpedo.

Doesn’t seem like it’d be the South Korean one, though. Just doesn’t make a whole lot of sense to me.

[–] masterspace@lemmy.ca 1 points 1 day ago

Yeah, no one in here is claiming they know 100% who did it.

But it would make sense if SK did. They have the motivation and potentially the means.

[–] Ilovethebomb@sh.itjust.works 8 points 1 day ago (1 children)

I think a limpet mine is a far more likely explanation, why risk such a heavily classified piece of technology falling into enemy hands?

[–] masterspace@lemmy.ca 4 points 1 day ago* (last edited 1 day ago)

To prevent the literal unpredictable madman neighbour with a mortal vendetta against you from getting a nuclear reactor.

Also, Russia already has super cavitating torpedoes, and there's not necessarily that much to learn from their pieces after impact.

Not saying a limpet mine isn't likely, but this also feels like exactly why SK is developing those torpedoes.

[–] Assassassin@lemmy.dbzer0.com 8 points 1 day ago (1 children)

MRXUUV is a comically terrible acronym. Why even bother using the "x" from "extra" if you're going to make an acronym that reads like a silicon valley pyramid scheme?

[–] prettybunnys@piefed.social 4 points 1 day ago

Maybe it makes more sense to a first language Korean speaker/reader and we’re too English language to get it?