[logicchains]

Maybe a stupid question, but is it possible to run a power cable next to the internet cables, so any ship dragging its anchor over the cables gets a rude surprise? Or that wouldn't work underwater?

[Etheryte]

That wouldn't do anything, you'd just be sending it straight to ground.

[immibis]

"straight to ground" is not how electricity works, but yes, they'd probably just destroy the cable in that spot, and the anchor would have only a slight scar on it at most

[kortilla]

Undersea cables already have electric cables to power the embedded repeaters

[tzs]

A big problem with that in general is that there is an accidental cable cut from a ship about every 3 days on average. Deliberate cable cuts are rare.