[alexvoda]

If you cover the entire ocean than that is not an issue.

But meanwhile I think I figured out that such an array would be a major issue because once the locations of the beacons is known, they will effectively turn every passive sonar into active sonar. Therefore it can not provide an asymmetrical informational advantage even if the investment would be asymmetrical.

[Tepix]

> If you cover the entire ocean than that is not an issue.

Covering all oceans with active sonar will probably kill a lot of marine wildlife.

Not to mention all your beacons in enemy waters will be destroyed, if not many more.

[alexvoda]

I was not asking about feasibility or externalities. I do not consider it a good idea. I was just asking about military usefulness. And as I said, after reflecting, I suspect even from that POV it would be detrimental.