USS Nightingale (AMc-149) was a coastal minesweeper acquired by the U.S. Navy for the dangerous task of removing mines from minefields laid in the water to prevent ships from passing. The fourth Nightingale was built by Western Boat Building Co., Tacoma, Washington, in 1940 as Saint Francis, a wooden hulled, diesel-powered purse seiner. She was acquired by the Navy from her owner, Hubert Ursich, at Tacoma 13 December 1941. Designated YP–150, she performed district patrol duties in the Seattle, Washington, area.