| History | |
|---|---|
 United States | |
| Name | Persistent |
| Builder | J.M. Martinac Shipbuilding Corp. |
| Laid down | 17 June 1954 |
| Launched | 23 April 1955 |
| Commissioned | 3 February 1956 |
| Decommissioned | 1 July 1971 |
| Stricken | 1 August 1974 |
| Identification | Hull number: AM-491/MSO-491 |
| Fate | Sold to Spain, 1 August 1974 |
 Spain | |
| Name | Guadalquivir |
| Acquired | 1 August 1974 |
| Identification | Pennant number: M43 |
| Fate | unknown |
| General characteristics | |
| Class and type | Aggressive-class minesweeper |
| Displacement | 775 tons (full load) |
| Length | 172 ft (52 m) |
| Beam | 36 ft (11 m) |
| Draft | 10 ft (3.0 m) |
| Speed | 15 knots (28 km/h; 17 mph) |
| Complement | 74 |
| Armament |
|
USS Persistent (AM-491/MSO-491) was an Aggressive-class minesweeper acquired by the U.S. Navy for the task of removing naval mines that had been placed in the water to prevent the safe passage of ships.
The second ship to be named Persistent by the Navy, the vessel was laid down 17 June 1954 as AM-491 by J.M. Martinac Shipbuilding Corp., Tacoma, Washington; reclassified MSO–491 on 7 February 1955; launched 23 April 1955; sponsored by Mrs. M.S. Erdahl; and commissioned 3 February 1956.