She steamed from Charleston on 3 February 1956, for
Yorktown, Virginia, where she was assigned duty with the Naval Mine Warfare School, embarking students for daily cruises to participate in minesweeping operations and training with fleet units. The ship sailed for
Argentia, Newfoundland, on 8 January 1957, and participated in fleet exercises from 15 January to 7 February, when she returned to Charleston.
Spoonbill operated from there until 4 February 1958, when she got underway for the
US West Coast. The minesweeper transited the
Panama Canal on 11 February, and arrived at
San Diego, California, on 28 February. She moved up the coast to
Treasure Island, California, and conducted operations from there until 2 February 1959. == Decommissioning ==