D 6
| Name | D 6 |
| Type | Submarine |
| GRT | 495 tons |
| Country |  British |
| Built | 1911 |
| Builder | Vickers, Barrow-in-Furness |
| Operator | Royal Navy |
| History |
U-boat attacks on Submarine D 6
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 24 Jun 1918 | UB 73 (Karl Neureuther) | Sunk | 12 miles N of Inishtrahull | 55.37N, 07.15W | 24 | ||
| In the evening; two survivors picked up by UB 73. | ||||||||
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