two cargo ships on the rhine

mittelrheintal transportation westerwald reflection freshwater andernach reservoir transport waterway mountain rheintal riverbed nautical swimming floating koblenz germany neuwied remagen vehicle boating channel flowing valley namedy stream rivers moving supply vessel harbor cargo ships rhine hills shore river brohl coast water ocean cloud rhein gorge barge canal bonn east blue west area linz lake boat tree flow ship mode two big sea bay rin ship barge vessel transport transportation river canal channel harbor swimming floating