USS Margaret (SP-527) was a yacht acquired by the U.S. Navy during World War I and in commission as a patrol vessel from 1917 to 1918. She was assigned to escort and patrol duty in the North Atlantic Ocean. Unfortunately, she had numerous mechanical problems and her commanding officer -- Lieutenant Commander Frank Jack Fletcher (1885–1973), a future admiral and aircraft carrier task force commander of World War II – did not consider her an effective fighting ship. Fletcher would finally ask the Navy to condemn her as unfit for naval service—something the Navy promptly did.