A system on land for transfer of containers between ship and land includes cranes for container loading or unloading and stations for transfer of containers operationally associated with the cranes. The transfer stations include an upper platform for reception and support of a container from and to a crane and a lower platform for loading or unloading of containers within and outside of the station. Between the upper platform and the lower platform there are centering and elevator devices which perform the transfer of a container between the two superimposed platforms without intervention of the crane.