Also in May "I-27" under Lieutenant Commander T. Fukumara participated in the unsuccessful midget submarine raid on Sydney. Her midget submarine, "M-14", was lost in this raid. Through June the submarines focused their patrols on the Mozambique Channel, sinking 20 merchant ships (120,000 tons of shipping in total). "I-30" sailed around the Cape of Good Hope to Lorient, arriving there on August 5 and thereby became the first Japanese submarine to sail into German territory during the war. On October 13 she was returning from Europe to Japan when she struck a mine and sank 3 miles east of Keppel Harbour.