Alert
| Name | Alert |
| Type | Fishing vessel (smack) |
| GRT | 59 tons |
| Country |  British |
| Built | 1907 |
| Builder | ?, Rye |
| Operator | John Runacres, Lowestoft |
| History | Fishing registration: LT 1102 |
U-boat attacks on Fishing vessel (smack) Alert
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 1 Aug 1915 | UB 10 (Otto Steinbrinck) | Sunk | Stopped and sunk 4 miles SE of the Newarp LV | 0 | |||
| Location also given as 18 miles NE of Lowestoft | ||||||||
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