sentences:  "Heron" was launched 18 May 1918 by the Standard Shipbuilding Co.; sponsored by Miss Astrid Rundquist, daughter of the mine sweep's prospective commanding officer; and commissioned 30 October 1918, Lt. K. Rundquist in command.Departing Boston 17 November 1918, "Heron" performed experimental mine sweeping work until 8 March 1919, when she returned to Boston to be fitted out for foreign duty.She departed Provincetown, Massachusetts and sailed for Kirkwall, Orkney Islands to participate in mine sweeping in the North Sea.