 Hi! Welcome to Pacific Partnership 2012. I'm City Chief Poe and I'll be your host of How Do They Do It. It's going to be a series of question and answer sessions that will explain how it gets done onboard the U.S. in its mercy. On my first episode, I'll be taking a question from one of our partner nation crew members. G'day, I'm Sapa Wetten from the Royal Australian Engineers. We're off the coast of Vietnam and what I want to know is, how do you get a flooding hospital to travel 20,000 miles? That was an excellent question. So let's hear it from one of our sub-dramatical experts. Hi, I'm Spencer Pierce, third engineer here to explain how we move a hospital ship for Pacific Partnership 2012. We boil water in two boilers. Water makes steam. Steam goes to power a set of turbines that's been really fast. The turbine speed is slowed down through a reduction gear system to go to the shaft speed. The shaft drives the propeller of which the propeller generates thrust. The thrust is transmitted to the ship via a thrust bearing and thrust bearing will push the ship forward or aft. After we use the steam through the turbines, it goes into the condenser. The condenser cools off the steam, condenses it back into a liquid and the liquid is pumped back into the boilers essentially to be used again and re-boiled. That's how we move a hospital 20,000 miles for Pacific Partnership 2012. And that's how it gets done. And if you don't know, ask Senior Pope.