(Tr.: dp. 500; l. 135'; b. 22'; dr. 14'5"; s. 10 k.; cl. Castle)
Siam Duffey, a British civilian trawler, was leased by the United States Navy and commissioned on 28 May1919. The trawler was used in minesweeping operations to clear the North Sea of mines laid in the North Sea Barrage.
Siam Duffey was struck from the Navy list and returned to her owners on 1 October 1919.