After Battle of Midway at 2.15am sub USS Tambor stalks 4 Jap cruisers 2 destroyers. They spot sub and start zig-zagging. Jap cruisers Mogami and Mikuma collide during zig zag, damaging Mogami's bow & killing 92 crew.
At 4.50am Jap destroyers scuttle stricken carrier Akagi by torpedoes & at 5.10am, Jap carrier Hiryu meets similar fate.
Both Hiryu’s skipper Capt Kaku and Rear Admiral Tamon Yamaguchi, commander of the 2nd Carrier Division, go down with the ship.