Heart-pounding video of the U.S. Coast Guard seizing cocaine from a drug submarine has captured America’s attention. What exactly are these vessels being used to move contraband? In 2008, Inside Edition got a look inside a drug submarine that's manufactured by the cartels. The courageous Coast Guard officers who leaped aboard that drug sub in the viral video are being praised by President Trump. The coast guard seized about 16,000 pounds of cocaine from the vessel.