many thanks. john. louis ceto is the chairman of marine and naval architecture at the hong kong institute of engineers. he joins us now live from hong kong. sir, thank you for being with us. a lot of passengers were told to stay in their cabins, stay where they were. why would that order be given? >> initially, in case of abandoning ship or any dangerous which happen on the ship the captain may first announce that there might be abandon or evacuation, so they just inform all the passengers attention so that they can wear -- have sufficient time to wear the life jacket and prepare everything. and waiting the second call so that they can go to the call point for gathering before evacuation. >> but that second call for evacuation according to some people on board never came. >> yes. and then some of the crew they have their own duty. they should escort the team