Sounds pretty interesting. Think one of many hurdles would be the transmission cabling. Provided they use the same principles as used in sub-sea telecommunications cables (lots or armour and corrosion protective material) should be ok. Placement would have to be considered with the hazards of shipping lanes, etc i.e. you don't want an anchor pulling up one of those cables
which funnily enough happens quite a bit with telco cables. One of the funniest stories I've heard from an international telco about a cable break around the Philipines - local fishermen used wrecked cars as sinkers for their long-line/drag fishing
when they wheeled the line back in the car had snagged on one of these cables and fishermen merrily hacked it off their line