Port Adelaide
| Name | Port Adelaide |
| Type | Steamer |
| GRT | 8,181 tons |
| Country |  British |
| Built | 1911 |
| Builder | Swan, Hunter & Wigham Richardson, Ltd., Newcastle |
| Operator | Commonwealth & Dominion Line, Ltd., London |
| History |
U-boat attacks on Steamer Port Adelaide
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 3 Feb 1917 | U 81 (Raimund Weisbach) | Sunk | 180 miles SW of Fastnet | 48.49N, 11.40W | London - Sydney | 0 | |
| Master taken prisoner. | ||||||||
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