Learning from the Engineering Disaster (Titanic and Lusitania)

Required  
Write 1,050 words essay in which you discuss the engineering factors that led to the  Sinking of Titanic and Lusitamia. What could be learned from the two disasters? What can be done to avoid similar disasters in the future? If you are given several materials to use for construction of a similar ship, which criteria will you use to identify the best material?