In the processes of maritime transport, containers are usually shipped by specialized container vessels. Hence, the fourth chapter is focused on problems related to the development of global fleet of container ships. It presents the most common types of container vessels (in accordance with their growing size—up to 24 K TEU included). Based on the statistical data, the structure of the global fleet of container vessels is also presented. Considering the stochastic anomaly (the Covid-19 pandemic), the chapter presents an attempt at evaluating the impact of that global phenomenon on the international trade turnover and the prospects for development and use of the container ship fleet in the world. In Chapter 4, the largest container operators in maritime transport in the world are identified, and the characteristics of the selected shipowners are provided. To provide a full exemplification of the position taken by shipowners on the global market of containerized freight, the economic and organizational aspects (assets, capital, revenues and costs) of the selected container shipowner (Hapag-Lloyd) are presented.