Thessaly
| Name | Thessaly |
| Type | Steamer |
| GRT | 4,310 tons |
| Country |  British |
| Built | 1909 |
| Builder | Richardson, Duck & Co., Stockton |
| Operator | D. MacIver, Sons & Co., Ltd., Liverpool |
| History | Or of 3128 grt. |
U-boat attacks on Steamer Thessaly
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 11 Jun 1917 | U 94 (Alfred Saalwächter) | Damaged | Damaged by gunfire | 56° 04'N, 12° 40'W | Liverpool - Rosario | general cargo | 1 |
Position of attack on Thessaly
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