Cargoes which must be carried by ships are usually delivered to a port prior to ship's arrival. So on ship's mooring they waist no time and loading operations may begin immediately. Cargoes are of different types and value and most of them are to be stored in special warehouses and sheds. This storing protects cargoes from any damage caused by sun rays, snow, rain and by some other factors. Only a few kinds of machinery and equipment packed in boxes can be placed on quays without roof protection. Warehouses and sheds are used for storing cargoes during any periods of time before they are conveyed to the quays and loaded on board ships.

There are single-floor-, two-floor- and multifloor sheds and warehouses in a modern port. In the warehouses special care should be taken to ensure even distribution of natural and artificial lightning. Walls, roofs and columns should be painted in light colours. Floors must be strong and they must withstand considerable weight of the packages stowed. The construction of warehouses and sheds must be such as to avoid the difficulty in arranging the flow of cargoes from the various floors without interruption. Clearances between the packages stowed in the space of the warehouse must be quite sufficient for free shifting and trimming the cargo. Perishable goods such as fish, meat, fruits, vegetables, paultry, butter and some other goods are kept in port cold-stores. Port's warehouses and sheds are linked with quays by railways and asphalt roads. This makes transportation of goods from the warehouses to the ships easy and convenient.