The items, each of which has a high value as a historical material, were salvaged from the Yamato wreckage off the coast of Kagoshima Prefecture during a survey by a private company in 2016.

The Yamato was sunk by U.S. carrier-borne aircraft on April 7, 1945, as it sailed toward Okinawa where its commanders were ordered to beach the vessel and use its mighty arsenal as a gun battery.

Microsoft co-founder Paul Allen's team discovered the wreck of the Japanese battleship Musashi in 2015, 3,280 feet deep in ...