Acadia
| Name | Acadia |
| Type | Sailing vessel |
| GRT | 1,556 tons |
| Country |  Norwegian |
| Built | 1893 |
| Builder | Ailsa SB Co., Troon |
| Operator | Skibs-A/S Acadia (Sigurd Bruusgaard), Drammen |
| History | Steel-hulled bark. Built as Holywood. |
U-boat attacks on Sailing vessel Acadia
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 23 Apr 1917 | U 52 (Hans Walther) | Sunk | Stopped and scuttled 65 miles NW of Tory Island | 55.44N, 09.30W | Dublin – Delaware Breakwater | in ballast | 0 |
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