Clifftower
| Name | Clifftower |
| Type | Steamer |
| GRT | 3,509 tons |
| Country |  British |
| Built | 1917 |
| Builder | J. Blumer & Co., Sunderland |
| Operator | Hansen Shipping Co., Ltd. (Hansen Bros., Ltd.), London |
| History |
U-boat attacks on Steamer Clifftower
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 29 Aug 1917 | k.u.k. U40 (Johann Krsnjavi) | Damaged | Torpedoed in the Ionian Sea | 37° 00'N, 17° 10'E | Newcastle - ? | coal | 0 |
Position of attack on Clifftower
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