Polycarp
| Name | Polycarp |
| Type | Sailing vessel |
| GRT | 509 tons |
| Country |  Norwegian |
| Built | 1880 |
| Builder | J. Børresen, Grimstad |
| Operator | A/S Polykarp (Hansen & Hermansen), Porsgrund |
| History |
U-boat attacks on Sailing vessel Polycarp
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 16 Apr 1917 | UC 51 (Wilhelm Schröder) | Sunk | 56° 23'N, 2° 52'E | West Hartlepool – Christiania | coal | 0 |
Position of attack on Polycarp
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