Building a floating city also known as an aircraft carrier is really hard, because the numbers are virtually unfathomable. A basic aircraft carrier is made of 60,000 tonnes of steel, 4.5 acres of non-skid surface, and four 325-foot catapults. The whole thing weighs 90 million kilos and takes five years to build and—get this—costs $5 billion (£4 billion) at the very least. To call it a massive undertaking would be putting it lightly.
Science Channel gives a brief overview on the construction process of an aircraft carrier. It’s like playing with Lego bricks, if Lego bricks weighed 800 million grams and you needed to weld 161 of them together. The video also covers the incredible features an aircraft carrier has, like the arresting wire and the jet blast deflector. It’s not quite enough info to build your own aircraft carrier, but if you’ve got $5 billion lying around it's a good start.