A Roll-on Roll-off or a ferry boat. Those ships are used mostly in short journeys to cross the Channel or the Mediterranean Sea for instance. They enable lorries to link two shores without wasting too much time in handling and storage. Indeed, the lorries...

A container ship. Nowadays more and more goods are carried in large containers all over the world. Containers are steel boxes of different sizes (usually 8 by 8 by 20 or 40 feet - 2.4 by 2.4 by 5.9 or 12 metres). The advantages are: Handling at docks...