Seal
| Name | Seal |
| Type | Trawler |
| GRT | 135 tons |
| Country |  British |
| Built | 1890 |
| Builder | Raylton Dixon & Co., Middlesbrough |
| Operator | G. Alderson Smith, Scarborough |
| History |
U-boat attacks on Trawler Seal
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 25 Sep 1916 | U 57 (Carl-Siegfried Ritter von Georg) | Sunk | Stopped and sunk 33 miles ExS of Hartlepool | 0 |
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