Microsoft co-founder and philanthropist Paul Allen and his research team have found a massive Japanese Second World War battleship off the Philippines near where it sank more than 70 years ago, his representatives said.
The apparent discovery of the wreckage of the Musashi, one of the largest battleships in history, comes as the world marks the 70th anniversary of the war's end.
Mr Allen and the team aboard his superyacht M/Y Octopus found the ship on Sunday, more than eight years after their search began, his publicity agency Edelman said in a statement.
The Musashi, commissioned in 1942, sank in October 1944 in the Sibuyan Sea during the battle of Leyte, losing half of its 2,400 crew members.
Mr Allen's team found the battleship just off the Sibuyan Sea, using an autonomous underwater vehicle in its third dive after narrowing down the search area using detailed undersea topographical data and other locator devices, the statement said.
Detailed images captured by a high-definition camera mounted on the underwater probe confirmed the wreckage as that of the Musashi, it said.
Japanese experts said that they were eager to study the images to try to confirm the ship's identity.
"The Musashi is truly an engineering marvel and as an engineer at heart, I have a deep appreciation for the technology and effort that went into its construction," Mr Allen said.
He said he is fascinated with Second World War history, inspired by his father's service in the US army, and that he was "honoured" to play a part in finding a key vessel in naval history and honouring the memory of those who served aboard the ship.
Mr Allen said he respects the sunken area as a war grave and plans to work with Japan's government to make sure the site is treated respectfully in line with Japanese traditions.
An organisation that supports Japanese navy veterans and conducts research on maritime defence said that if the discovery is confirmed, a memorial service could be held at the site.