Harmattan
| Name | Harmattan |
| Type | Steamer |
| GRT | 4,792 tons |
| Country |  British |
| Built | 1911 |
| Builder | Swan, Hunter & Wigham Richardson, Ltd., Newcastle |
| Operator | J. & C. Harrison, Ltd., London |
| History |
U-boat attacks on Steamer Harmattan
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 5 May 1917 | UC 37 (Otto Launburg) | Sunk | Mined 30 miles off Cape Bon or 7 miles N of Cape Rosa, Algeria | Avonmouth - ? | government stores | 36 |
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