Louise
| Name | Louise |
| Type | Sailing vessel |
| GRT | 645 tons |
| Country |  Norwegian |
| Built | 1876 |
| Builder | J. Jürgens, Elsfleth |
| Operator | Chr. Heidenreich, Kristiania |
| History | Wooden bark. |
U-boat attacks on Sailing vessel Louise
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 19 Jun 1917 | U 93 (Helmut Gerlach) | Sunk | 135 miles ENE of Hook Point, Hartlepool | 56° 14'N, 2° 29'E | Hartlepool – Christiania | coke | 0 |
Position of attack on Louise
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