Gladiateur
| Name | Gladiateur |
| Type | Fishing vessel |
| GRT | 23 tons |
| Country |  French |
| Built | 1904 |
| Builder | ?, Port-Louis |
| Operator | Gallic, Lorient |
| History |
U-boat attacks on Fishing vessel Gladiateur
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 24 Jan 1917 | UC 21 (Reinhold Saltzwedel) | Sunk | 7 miles SSW of Kerdonis | 0 |
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