Perseo
| Name | Perseo |
| Type | Passenger steamer |
| GRT | 4,857 tons |
| Country |  Italian |
| Built | 1883 |
| Builder | R. Napier & Sons, Glasgow |
| Operator | Soc. Italiana di Serzivi Marittimi, Venice |
| History |
U-boat attacks on Passenger steamer Perseo
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 4 May 1917 | k.u.k. U4 (Rudolf Singule) | Sunk | Torpedoed and sunk in the Ionian Sea while serving as troop transport. | 38.02N, 18.43E |
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