

It’s possible they detected some kind of loud old-fashioned diesel sub making a run out into the strait and home. Iran has domestically built versions of the Te-1 mine for example, which deploys on the seabed and fires a rocket (yes, rockets work underwater) at a detected ship/submarine.




They use Te-1 mines that sit on the seabed and then launch a rocket (yes, really) up from the seabed into the bottom of detected ships. They’re reported to have a range of about 2 miles, and will be programmed to fire at certain acoustic signatures that have been recorded previously by your submarines and spy ships. If you don’t have a big library of up to date acoustic signatures, you could just remove the IFF feature and tell everyone good luck.
To put this in perspective, the Strait of Hormuz could become very spicy with just a handful of these mines deployed.