Australian Sub defeats US Navy in exercise

Indeed. You can watch a Collins class sub take out a US Destroyer during war games, in this relatively short video. ▶ this video

> They have the largest submarine force in the world; but every one of them is an outdated diesel-electric. What's wrong with diesel-electric submaries. Here's US superiority vs diesel-electric subs: ▶ this video link

Planes are easier to ground (see what happened with Morales). The US wouldn't even be close to knowing where Russia's subs would be: link > It was the US Navy’s biggest jolt in years. On October 26, 2006, a Chinese Song-class attack submarine quietly surfaced within nine miles of the aircraft carrier USS Kitty Hawk as the 80,000-ton-diplacement vessel sailed on a training exercise in the East China Sea between Japan and Taiwan. >The Song-class vessel, displacing 2,200 tons, was close enough to hit the Kitty Hawk with one of its 18 homing torpedoes. None of the carrier’s roughly dozen escorting warships detected the Song until it breached the surface. And: ▶ this video