Harmatris
| Name | Harmatris |
| Type | Steamer |
| GRT | 6,387 tons |
| Country |  British |
| Built | 1912 |
| Builder | Northumberland SB. Co., Ltd., Newcastle |
| Operator | J. & C. Harrison, Ltd., London |
| History |
U-boat attacks on Steamer Harmatris
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 8 Mar 1916 | UB 18 (Otto Steinbrinck) | Sunk | Torpedoed 0.25 miles NExN from the Boulogne Breakwater | St. John, N.B. - Boulogne | oats & hay | 4 |
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