This ships have to be accompanied by tugs, to prevent this kind of errors, if the sandstorm was so big that even the tugs were unable to maintain control of the

This ships have to be accompanied by tugs, to prevent this kind of errors, if the sandstorm was so big that even the tugs were unable to maintain control of the ships, maybe the error was from the canal authority to give the permission to transit the canal without looking the weather forecast.