Dirigo
| Name | Dirigo |
| Type | Sailing vessel
|
| GRT | 3,004 tons |
| Country |  American |
| Built | 1894
|
| Builder | Arthur Sewall & Co., Bath, ME
|
| Operator | Axim Transportation Co., Inc., Pensacola, Fla.
|
| History | Four-masted steel-hulled bark.
|
U-boat attacks on Sailing vessel Dirigo
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties |
| 1 | 31 May 1917 | UB 23 (Hans Ewald Niemer) | Sunk | Stopped and sunk 6 miles SW of Eddystone
| 50° 09'N, 4° 28'W
| New York - Havre
| steel
| 1
|
Position of attack on Dirigo
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