The wreckage from an H 2 rocket that failed in November has been retrieved from the Pacific Ocean, Japanese officials announced Tuesday.

The main engine was salvaged from the seabed about 230 miles (380 kilometers) northwest of the Ogasawara Islands, in the northern Pacific, according to Japan's National Space Development Agency (NASDA). The first-stage engine was pulled aboard a chartered salvage ship on the morning of Sunday, January 23.

The salvage vessel launched a robotic submersible on Saturday and detected the wreckage that night. The engine was discovered in water approximately 9,500 feet (2,900 meters) deep.

The H 2 rocket sank in the ocean on November 15. It malfunctioned shortly after launch from the Tanegashima Space Center in southern Japan, and was deliberately blown up by mission controllers.

The salvage ship is scheduled to return to Japan's Yokosuka port this week. The engine debris will be sent to an aerospace laboratory in Tokyo, where they will try to determine why the launch failed.