The documentary video "Why Do Ships Sink? Featuring Titanic & Costa Concordia disaster" posted by SpiesLeaks looks at questions regarding the safety of cruise ships and the science of their buoyancy.
The video looks back to the Costa Concordia and Titanic disasters. Marine engineers and safety experts reconstruct the events that led up to the biggest cruise disasters in the history including the Oceanos and the Sea Diamond.
In the last ten years the size of an average cruise ship has doubled. Each year about twenty million people embark on cruises. Experts try to answer the questions are the modern cruise ships really safe and how you can survive a sinking ship or boat.