Avance
| Name | Avance |
| Type | Fishing vessel (smack) |
| GRT | 57 tons |
| Country |  British |
| Built | 1911 |
| Builder | Kitto & Sons, Porthleven |
| Operator | Richard Llewellyn Hancock, Milford |
| History | Fishing registration: M119 |
U-boat attacks on Fishing vessel (smack) Avance
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 21 Mar 1917 | UC 66 (Herbert Pustkuchen) | Sunk | Stopped and sunk by gunnery 25 miles WSW of Portland Bill | 0 |
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