Tithonus
| Name | Tithonus |
| Type | Armed boarding steamer |
| GRT | 3,463 tons |
| Country |  British |
| Built | 1908 |
| Builder | Gourlay Bros. & Co. (Dundee), Ltd., Dundee |
| Operator | Royal Navy |
| History |
U-boat attacks on Armed boarding steamer Tithonus
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 2 Apr 1917 | U 78 (Otto Dröscher) | Damaged | Mined between Mull and Coll Island | 56.40N, 06.17W | 0 | ||
| Mine laid on February 12, 1917. | ||||||||
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