The topic of handling, stowage and transport of containers by sea is elaborated and analyzed in this bachelor's thesis. Before elaborating on the essence of the topic, the thesis explains in more detail the historical development of container ships as well as the classification of container ships according to purpose, transhipment technology and type. This is followed by classification of the containers themselves according to the International Organization for Standardization, where the goals and provisions of the International Convention for Safe Containers are clarified. Finally, the very essence of the thesis is analyzed – container stowage, securing and transport. In this part all the elements affecting the proper stowage and securing of containers are analyzed, the classification of equipment for securing containers is highlighted and the systems according to which the container layout is determined are described. At the very end of the thesis, the principles, layout and provisions according to which containers are secured in warehouses or on the open deck are described in detail.