[DavidE]

Sounds like pulp novel stuff, but a fascinating concept:

https://kitup.military.com/2017/04/...iterate-target-underwater.html?ESRC=dod-bz.nl

 

[Skeptic49]

The Russians had a torpedo that used vented gas to rip the water apart. Small caliber for harbor defense might be interesting.

I wonder how the Coast Guard plans to deal with stealth underwater drones planting limpet mines on ships? An anonymous attack could seriously impede trade by dropping a container ship in the Jacksonville ship channel.

Geoff
Who is a retired professional paranoid.