USAAF anti-shipping operations in the Far East were generally unsuccessful. In early operations during the Battle of the Philippines, B-17s claimed to have sunk one minesweeper and damaged two Japanese transports, the cruiser , and the destroyer . However, all of these ships are known to have suffered no damage from air attack during that period. In other early battles, including the Battle of Coral Sea or Battle of Midway, no claims were made at all, although some hits were seen on docked targets. The USAAF eventually replaced all of their anti-shipping B-17s with other aircraft, and came to use the skip bombing technique in direct low-level attacks.