https://www.youtube.com/watch?time_continue=119&v=ASU3Q376vvs
Video illustrates how vessels of all sizes can load and unload both liquid and dry bulk at the terminals and the buoys and dolphins in the port of Rotterdam. This guarantees ship-to-ship transfer operations even in case of bad weather and/or high waves.
In the port vessels rarely encounter delays and know in advance when they can load and unload their cargo. They can also use these facilities for lay-by between terminal operations or services like repair work or bunkering.