Alster
| Name | Alster |
| Type | Steamer |
| GRT | 964 tons |
| Country |  British |
| Built | 1909 |
| Builder | Ramage & Ferguson, Ltd., Leith |
| Operator | Leith, Hull & Hamburg Steam Packet Co., Ltd. (J. Currie & Co.), Leith |
| History |
U-boat attacks on Steamer Alster
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 14 Jan 1918 | UB 62 (Bernhard Putzier) | Sunk | 5 miles ESE of Noss Head, Shetland Islands | Bergen - Hull | dried fish | 0 |
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