Paraphrase the following paragraph.
The EESC asks the Commission, as a matter of urgency, to simplify customs formalities and procedures for ships sailing exclusively between EU ports as key factors in the creation of a maritime transport space without barriers.
For vessels which only sail exclusively in EU ports, the EESC asks that the Commission simplify customs formalities and arrangements as soon as possible, as this is the decisive element to establish a sea area free from obstacles.