Riversdale
| Name | Riversdale |
| Type | Steamer |
| GRT | 2,805 tons |
| Country |  British |
| Built | 1906 |
| Builder | J. Blumer & Co., Sunderland |
| Operator | R. C. Thompson, Sunderland |
| History |
U-boat attacks on Steamer Riversdale
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 18 Dec 1917 | UB 31 (Thomas Bieber) | Sunk | Torpedoed 1 miles S of Prawle Point | Tyne - Savona | coal | 1 |
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