At about 09:00 on 3 June, a US Navy patrol plane spotted the Japanese Occupation Force to the west-southwest of Midway. Three hours later, the Americans found the Japanese transport group to the west. They attacked, but none of the bombs hit and no major damage resulted. Early the following morning the Japanese oil tanker "Akebono Maru" was hit by a torpedo from an attacking PBY. This was the only successful air-launched torpedo attack by the U.S. during the entire battle.