Monarch
| Name | Monarch |
| Type | Steamer |
| GRT | 1,318 tons |
| Country |  Norwegian |
| Built | 1878 |
| Builder | Wigham Richardson & Co., Newcastle |
| Operator | A/S D/S Monarch (C. J. Svendsen), Christiania |
| History |
U-boat attacks on Steamer Monarch
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 23 May 1917 | UB 41 (Günther Krause) | Sunk | 2 miles E of Seaham | Tees - Saint Nazaire | pitch | 10 |
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