This is a fake news site but even if it was true, the article says that the source is Russia.

So are you saying that Russia is spreading the claim that Russia sabotaged the pipelines?

What if you could build huge torpedoes that you can just remote control and basically hit any target accessible from the ocean?

Or a droid submarine that you can quickly move to offshore target which hatches a missile launch from there.

Navy is known for warships but the underwater tech might be the more stealth and capable attack.