invulnerable against a storm like this but these ships can go fast. >> these ships are carrying massive weight cargo. this ship is as big as the "titanic." but they lost control. they losteerage. they had engine failures for whatever reason. that's not clear as of yet. water intake. if they lost their steerage and can't steer into the sea and control the ship they are at the mercy of the weather. >> one message received by the coast guard we're taking on water we think we're under control but then nothing else. that suggests something happened and happened fast. how quickly could that happen? >> in nanosecond. it changes the center of gravity of the ship and it keeps going and that can be catastrophic. >> this has happened before. how likely is it that a capsized