Baltzer
| Name | Baltzer |
| Type | Sailing vessel |
| GRT | 343 tons |
| Country |  Russian |
| Built | 1893 |
| Builder | Alkstnen, Adiamünde |
| Operator | A. Kalming, Riga |
| History | Wooden three-masted schooner. |
U-boat attacks on Sailing vessel Baltzer
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 10 Aug 1915 | U 35 (Waldemar Kophamel) | Damaged | 22 miles W1/2S Fastnet | ||||
| per Spindler, damaged only per Lloyd's | ||||||||
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