People out there :) HELP is any one with a imagination open this :)?

right i ahve to righht a story based on the titainc and the events that happend not the film but the titanic it self it needs to say wich charatscter i am going to be writing as like a 1st cl apssenger orr the capitain or the crew also it needs a cirsis taht happnes so like in the film jack is locked in thta room wen the shipp is sinking i need a digffernt crisis so waaht could happen ?any one with imagination please can you help me mucho apreciated:)