Caledonien
| Name | Caledonien |
| Type | Passenger steamer |
| GRT | 4,140 tons |
| Country |  French |
| Built | 1882 |
| Builder | Cie. des Messageries Maritimes, La Ciotat |
| Operator | Cie. des Messageries Maritimes, Marseille |
| History |
U-boat attacks on Passenger steamer Caledonien
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 30 Jun 1917 | UC 34 (Robert Sprenger) | Sunk | Mined 30 miles north of Port Said
| 31° 45'N, 32° 23'E | Marseille - Madagascar | ||
| Mines laid 28 May 1917 | ||||||||
Position of attack on Caledonien
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