On 14 April 1988, the frigate was badly damaged by an Iranian mine, and 10 sailors were wounded. U.S. forces responded with Operation Praying Mantis on 18 April, the U.S. Navy's largest engagement of surface warships since World War II. Two Iranian oil platforms were destroyed, and five Iranian warships and gunboats were sunk. An American helicopter also crashed. This fighting manifested in the International Court of Justice as "Oil Platforms case (Islamic Republic of Iran v. United States of America)", which was eventually dismissed in 2003.