Paul Allen found the Musashi

Long-lost wreckage said to belong to a World War II Japanese battleship has been discovered by none other than Microsoft co-founder Paul Allen.

The philanthropist and Microsoft alumnus posted images on Twitter that appear to show the Musashi, once one of the two largest warships in the world. Allen said the ship was found 1 km deep by an unmanned submersible launched from his superyacht, the MY Octopus. The find near the Philippines was the culmination of an eight-year search.

“Since my youth, I have been fascinated with World War II history, inspired by my father’s service in the U.S. Army,” Allen said in a statement.

Allen showed the bow of the ship with a distinctive chrysanthemum, the flower of Japan’s royal family, and a massive anchor. The ship was one of two Yamato-class battleships constructed by the Japanese Imperial Navy, the largest class of warship built at the time, CNN reports.

The Musashi was sunk by the U.S. Navy in October 1944 with the loss of more than 1,000 crew.

Allen, who has a net worth estimated at $17.5 billion, is the owner of several U.S. sports teams including the Seattle Seahawks. He founded Microsoft alongside Bill Gates in 1975 and resigned from the Microsoft Board in 2000.