Middlesex
| Name | Middlesex |
| Type | Steamer |
| GRT | 7,265 tons |
| Country |  British |
| Built | 1914 |
| Builder | Chas. Connell & Co., Ltd., Glasgow |
| Operator | Federal Steam Navigation Co., Ltd., Liverpool |
| History |
U-boat attacks on Steamer Middlesex
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 16 May 1917 | U 30 (Franz Grünert) | Sunk | 150 miles NW of Tory Island | 56° 03'N, 12° 30'W | Manchester - Australia | general cargo | 0 |
Position of attack on Middlesex
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