Ringholm
| Name | Ringholm |
| Type | Steamer |
| GRT | 705 tons |
| Country |  Norwegian |
| Built | 1909 |
| Builder | Porsgrund Mek. Verks., Porsgrunn |
| Operator | A/S D/S Ringholm (J. M. Johannesen), Bergen |
| History |
U-boat attacks on Steamer Ringholm
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 20 Apr 1917 | UC 41 (Kurt Bernis) | Sunk | 5 miles off St. Abbs Head | Bergen - Tonnay Charente | ammonium nitrate | 0 |
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