Progresso
| Name | Progresso |
| Type | Tug |
| GRT | 31 tons |
| Country |  Italian |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Tug Progresso
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 14 Apr 1917 | UC 20 (Franz Becker) | Sunk | off Tunisia (?) | ||||
| plus lighter | ||||||||
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