Groeswen
| Name | Groeswen |
| Type | Steamer |
| GRT | 3,570 tons |
| Country |  British |
| Built | 1900 |
| Builder | J. Readhead & Sons, South Shields |
| Operator | W. & C. T. Jones SS. Co., Ltd. (W. & C. T. Jones), Cardiff |
| History |
U-boat attacks on Steamer Groeswen
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 27 Nov 1917 | UC 11 (Ferdinand Schwartz) | Sunk | Mined 3 miles NE1/2E of the Sunk LV | 51.55N, 01.40E | Hull - ? | coal | 0 |
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