Cuxhaven ferry terminal is 102 km south of Hörnum. This corresponds to a distance of 55 nautical miles.
The ferry port of Cuxhaven in Germany offers connections to the German islands of Helgoland and Sylt. The routes Cuxhaven - Helgoland and Cuxhaven - Hörnum are offered here several times a day by the shipping companies Reederei Cassen Eils and Adler-Schiffe.