USS Alcedo
| Name | USS Alcedo |
| Type | Navy Yacht |
| GRT | 983 tons |
| Country |  American |
| Built | 1895 |
| Builder | D. & W. Henderson & Company, Ltd., Glasgow |
| Operator | U.S. Navy |
| History | SP-166, purchased by the U.S. Navy on June 1, 1917 from George W. C. Drexel of Philadelphia. |
U-boat attacks on Navy Yacht Alcedo
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 5 Nov 1917 | UC 71 (Ernst Steindorff) | Sunk | Torpedoed off Penmarch | 47° 23'N, 4° 44'W | 21 |
Position of attack on Alcedo
If you can help us with any additional information on this vessel then please contact us.