The TERCONMED project's aim is to test whether modern Maritime Container Terminals (MCT) are key elements in Short Sea Shipping (SSS) in the Mediterranean and amongst third-party countries in its basin. To this end, different actions are proposed, not only regarding the improvement of MCTs, but concerning changes and modifications that could be made to vessels involved in SSS. Customs requirements for SSS in member countries are an obstacle that makes this type of transport more problematical, as, while vehicles involved in road transport have no difficulties while travelling on European roads, maritime transport must meet documentation requirements which should not just be simplified but abolished in most cases and arrive to the European Maritime Transport Space without Barriers.