🌐EnglishEnglishDeutschNederlandsPolskiEntityQ541216· pop 8· linked from 8 articlesSeedienst Ostpreußenboat service between mainland Germany and East Prussia, 1920-1939Available in 7 languagesDeutschBretonLithuanianNederlandsNorwegianPolskivia Wikidata sitelinks · CC0ConnectionsGermanyCountryPolandCountryWorld War IIConceptCategories1920 establishments in Germany1939 disestablishments in GermanyEast Prussia in the interwar periodGermany–Poland relations (1918–1939)Maritime history of GermanyMaritime history of PolandProvince of Pomerania (1815–1945)