Frogner
| Name | Frogner |
| Type | Steamerf |
| GRT | 1,476 tons |
| Country |  Norwegian |
| Built | 1907 |
| Builder | Nylands Verksted, Christiania |
| Operator | D/S A/S Aker (Fearnley & Eger), Christiania |
| History |
U-boat attacks on Steamerf Frogner
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 29 Apr 1918 | UC 17 (Erich Stephan) | Sunk | 3 miles NW1/2N of Portland Bill | St. Malo - Newport, Mon | in ballast | 0 |
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