( Here is a tower from one of EVA’s ships on display at their Taipei headquarters. )
The seaport in Kaohsiung is one of the busiest in the world. The big ships bring in a lot of goods from all over the world. Taiwan depends on trade for many of the raw materials they use to manufacture their renowned high tech gadgets and gizmoos.
From cargo to fishing. Boats and ships are necessary. If there are natural resources that Taiwan is lacking in, they may need to ship material in. Ships are slower than airplanes, but they can hold much more cargo. Cargo ships, also called container ships, have gotten so large that they are like floating continents. Navigating such a humongous ship is a job for a specially trained super capable person. Ships captains are unique and amazing people.