Duchess Of Montrose
| Name | Duchess Of Montrose |
| Type | Auxiliary minesweeper
|
| GRT | 322 tons |
| Country |  British |
| Built | 1902
|
| Builder | John Brown & Co., Ltd., Clydebank, Glasgow
|
| Operator | Royal Navy
|
| History | Peace-time operator: Caledonian Steam Packet Co., Ltd., Glasgow
|
U-boat attacks on Auxiliary minesweeper Duchess Of Montrose
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties |
| 1 | 18 Mar 1917 | UB 12 (Ernst Steindorff) | Sunk | Mined off Gravelines (barrage 248)
| 51.03N, 02.07E
|
|
| 12
|
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