 In April 1942, she took part in the Indian Ocean raid, striking the British naval bases at Colombo and Trincomalee on Ceylon, and sinking the Royal Navy aircraft carrier and the heavy cruisers and , also with the help of "Shōkaku".In May 1942, she was assigned along with "Shōkaku" to support Operation Mo, the invasion of Port Moresby, New Guinea.Alerted by intercepted and decrypted Japanese naval messages, the Americans dispatched the carriers and to stop this operation.