Long time ago, ships were also used for battle and it's just one of the many reasons for the number of ships that sunk. These large water crafts are designed to float on all water forms like seas, lakes, and rivers. Transportation has been expanding and improving for many years now. Ships are created to carry heavy loads to other places. They can either be a tanker or cruise ships. Now, many people have the privilege to enjoy luxury in cruise ships. It's a wonder how humans are able to find out how to make these large inventions float on water with all its loads.