IJN Aircraft Carrier Hiryū
Displacement:20,250 t (17,300 t Std)Machinery:8 boilers, 4 shafts Flight Deck:711 ft 6 in  216.8 mArmor:1.8 in (46 mm) belt
Max Length:745 ft 11 in227.3 mMax Power:153,000 hp114 092 kWFighters: 27× A6M2 Type 0DP Guns:6× 2× 5 in (127 mm)/40
Beam:73 ft 3 in22.3 mMax Speed:34.5 kts63.89 km/hBombers: 18× D3A1 Type 99AA Guns:9× 3× 0.98 in (25 mm)
Draght:25 ft 9 in7.7 mRange:10,330 nm19 131 kmAttack: 18× B5N2 Type 97AA Guns:3× 2× 0.98 in (25 mm)

  * Aircraft as in the largest known Air Group ever carried (during the Pearl Harbor raid).

Hiryū, a slightly enlarged version of Sōryū was laid down on 8 July 1936 at Yokosuka Naval Dockyard, launched on 16 Novem­ber 1937 and com­mis­sioned on 5 July 1939. The ship improved on her smaller sister in a number of respects, notably combat range, engines power, and pro­tec­tion. The most notable difference in appearance was an island superstructure on the port side of the ship. Despite a number of short­comings, Hiryū was judged to be a highly useful design that was to be reincarnated in the late-war Unryū-class aircraft carriers.

Hiryū was active off China during the next few years. During the opening stages of the Pacific War, she took part in the attack on Pearl Har­bor, Wake, Palau Islands, Darwin, Indian Ocean raids, and the battle of Midway, where she was hit by four bombs at 1705, 4 June 1942. The hits caused massive fires on a forward part of the hangar decks. Ten hours after the attack the crew was ordered to abandon Hiryū. The ship was hit by a torpedo from her escort destroyer and sank at 0910, 5 June 1942, at position 31°27' N 178°23' W.