Radaas
| Name | Radaas |
| Type | Steamer |
| GRT | 2,524 tons |
| Country |  Danish |
| Built | 1890 |
| Builder | J. Readhead & Sons, So. Shields |
| Operator | Dampsk. Selsk. Primula (Schach, Steenberg & Co.), Copenhagen |
| History |
U-boat attacks on Steamer Radaas
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 21 Sep 1917 | UB 40 (Hans Howaldt) | Sunk | Torpedoed about 18 miles west of Portland Bill LH
| 50.34N, 03.05W | Tyne - Bordeaux | coal | 1 |
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