Guldaas
| Name | Guldaas |
| Type | Sailing vessel |
| GRT | 636 tons |
| Country |  Norwegian |
| Built | 1880 |
| Builder | J. Jürgens, Elsfleth |
| Operator | Thygo Sørensen A/S, Kristiania |
| History |
U-boat attacks on Sailing vessel Guldaas
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 19 Oct 1916 | UB 35 (Otto von Schrader) | Sunk | 56.41N, 02.56E | Risør – West Hartlepool | pitprops | 0 |
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