Exchange
| Name | Exchange |
| Type | Steamer |
| GRT | 279 tons |
| Country |  British |
| Built | 1884 |
| Builder | W. Thomas & Sons, Amlwch |
| Operator | W. Thomas Jr., Amlwch |
| History |
U-boat attacks on Steamer Exchange
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 23 Mar 1917 | UB 39 (Heinrich Küstner) | Sunk | Stopped and sunk by gunnery 30 miles NW of Cayeux | 8 |
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