Challenge best avoided? (Score: 0) by Anonymous Coward on 2016-10-17 04:11 (#1YASA) There are entire ships designed for servicing underwater cables. Their technology isn't secret. They don't service the cable on the bottom of the ocean, they haul it up to the ship. They can tell the cable owners to turn off the power, but considering that linesmen in every city of the electrified world work on live lines as part of their job, I'm fairly certain the Russians would be able to hire one.