National Geographic (Canada) In one night, over 1000 Allied sailors perish when four cruisers go down in flames; Petrel searches for the cruisers in a graveyard littered with ships. 2026-10-24 Rob Kraft hunts for Musashi, the biggest battleship ever built and considered to be unsinkable by the Japanese. 2026-10-24 Research vessel Petrel picks up what they believe to be the debris trail of the USS Johnston; a manned submersible is deployed to potentially put eyes on the deepest shipwreck in the world. 2026-10-24 In one night, over 1000 Allied sailors perish when four cruisers go down in flames; Petrel searches for the cruisers in a graveyard littered with ships. 2026-10-24 Rob Kraft hunts for Musashi, the biggest battleship ever built and considered to be unsinkable by the Japanese. 2026-10-24