817 Sylt, Harbour List
| Eiswinter | Anfang | Ende | Saisonlänge | Tage mit Eis | FL.Summe | Vol.Summe | max.Dicke | Restrictions |
| 2026 | 11.Jan 2026 | 13.Feb 2026 | 34 | 16 | 9.5 | 69.5 | 7.5 | 10.0 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2025 | 17.Feb 2025 | 19.Feb 2025 | 3 | 3 | 0.2 | 0.5 | 2.5 | nan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2021 | 06.Feb 2021 | 19.Feb 2021 | 14 | 14 | 4.3 | 87.6 | 27.5 | nan | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2019 | 25.Jan 2019 | 26.Jan 2019 | 2 | 2 | 0.3 | 0.9 | 2.5 | nan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2018 | 27.Feb 2018 | 20.Mar 2018 | 22 | 15 | 6.0 | 119.2 | 27.5 | nan | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2016 | 07.Jan 2016 | 07.Jan 2016 | 1 | 1 | 0.1 | 0.2 | 2.5 | nan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2014 | 23.Jan 2014 | 07.Feb 2014 | 16 | 16 | 6.4 | 57.8 | 12.5 | 15.0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |