Kazak
| Name | Kazak |
| Type | steamer |
| GRT | 622 tons |
| Country |  Russian |
| Built | 1890 |
| Builder | Wood, Skinner & Co., Newcastle |
| Operator | Imperial Russian Navy |
| History |
U-boat attacks on steamer Kazak
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 14 Apr 1918 | UC 23 (Hans Georg Lübbe) | prize | SE Crimea | 44° 20'N, 34° 48'E | 0 | ||
| Taken as prize, Black Sea transport N.35, sometimes listed as COSSACK of 756 grt | ||||||||
Position of attack on Kazak
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