Audax
| Name | Audax |
| Type | Steamer |
| GRT | 975 tons |
| Country |  British |
| Built | 1903 |
| Builder | Koninkl. Mij. de Schelde, Vlissingen |
| Operator | The Shipping Controller (L. S. Carr & Co.), London |
| History | Built as Haardraade for D/S A/S Haardraade (Blakstad, Holta & Co.), Skien. Sold in 1915 to D/S A/S Audax (C. Homann-Mürer), Fredrikstad and renamed Audax. Came under British control in 1917. |
U-boat attacks on Steamer Audax
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 6 Sep 1918 | UB 80 (Max Viebeg) | Sunk | Torpedoed 6.5 miles ExN of Robin Hood Bay | 54.29N, 00.21W | Rouen - Tyne | in ballast | 3 |
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