Jonny’s mission is to learn how to make paint; but not the common, everyday-use paint. This specialised, super-slippery paint is designed to prevent marine barnacles attaching to ships hulls, which they do in their thousands if left untreated. The paint is going to be applied to one of the world’s biggest new cruise liners, which is almost three times the size of the Titanic. Jonny meets the paint scientists who battle barnacles for a living at one of Europe’s biggest paint factories in the UK; and then visits the shipbuilding yards on the River Ems in Germany to see where the giant ships are painted.