USS Sandpiper (AM-51)
 USS Sandpiper (AM-51) was a Lapwing-class minesweeper. Laid down on 15 November 1918 at the Philadelphia Navy Yard Philadelphia Pennsylvania and launched on 28 April 1919 USS Sandpiper (Minesweeper No.51) was commissioned on 9 October 1919 redesignated AM-51 on 17 February 1920 and reclassified as a Small Seaplane Tender AVP-9 on 22 January 1936.