E 20
| Name | E 20 |
| Type | Submarine |
| GRT | 725 tons |
| Country |  British |
| Built | 1915 |
| Builder | Vickers, Barrow-in-Furness |
| Operator | Royal Navy |
| History |
U-boat attacks on Submarine E 20
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 6 Nov 1915 | UB 14 (Heino von Heimburg) | Sunk | Sea of Marmara | 21 |
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