But now the two-millennia-old principle of the Greek mathematician Archimedes has been deployed ... inaugurated in late 2016, is a new ship lift, a hydraulic seesaw that raises and lowers vessels ...

In simple terms, Archimedes' Principle explains that the weight of ... is an equilibrium of pressure within and surrounding the ship. When the ballast tank is emptied, compressed air is released ...

Legend has it that he discovered this principle while in the ... Invents the Archimedes' Screw, a device used to pump water out of ships. c. 263 B.C. Returns to Syracuse. 263-216 B.C. Develops ...