"Now the Russians want to take the idea to a new low--with concrete submarines. Called C-subs, these 6-man vessels will differ from today's submarines in several important ways. Conventional submarines float until they take on water. C-subs will stay afloat by using four electric turbine pumps to propel water downward. The swiveling nozzles that direct this flow also will enable the C-sub to move. "
So if one of these things loses propulsion....
Say hello to Davey Jones for me.
