Anna I
| Name | Anna I |
| Type | Ice Breaker |
| GRT | |
| Country |  Russian |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Ice Breaker Anna I
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 11 Nov 1916 | U 76 (Waldemar Bender) | Sunk | Mined White Sea | ||||
| Likely U76 who laid mines on October 2 and 3 along the Murmane coast at the entrance of the White Sea | ||||||||
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