The system of different waterways makes possible to join the area of Vistula Delta with the system of European waterways. It is enable by shipping lanes joining ports situated at the Vistula Lagoon with sea-ports of Kaliningrad, Trójmiasto and others. Inland waterways join Vistula Delta with the system of similar waterways in Western and Eastern Europe. Finally, the trail Elbląg Channel links Vistula Lagoon with the lakes of Mazury. The basic condition of inland navigation development, therein the development of tourism on the area of Vistula Delta and Vistula Lagoon, is a modernization and extension of the inland waterways. Because of that there is implemented a Program of Vistula Delta and Vistula Lagoon Waterways Development. One of important results is a project “Pętla Żuławska – International Waterway E-70” which is executed on the area of two voivodeships: pomorskie and warmińsko-mazurskie.