 The carriers ' 242 @.@ 2 @-@ meter ( 794 ft 7 in ) flight deck had a maximum width of 29 meters and overhung the superstructure at both ends , supported by pillars . Ten transverse arrestor wires were installed on the flight deck that could stop a 4 @,@ 000 @-@ kilogram ( 8 @,@ 800 lb ) aircraft . If the aircraft missed those , it could be stopped by one of three crash barricades . Although space and weight were allocated for two aircraft catapults , their development was not completed before the Shōkaku @-@ class ships were sunk . The ships were designed with two superimposed hangars ; the upper hangar was about 200 meters ( 656 ft 2 in ) long and had a width that varied between 18 @.@ 5 and 24 meters ( 60 ft 8 in and 78 ft 9 in ) . It had a height of 4 @.@ 85 meters ( 15 ft 11 in ) while the lower hangar was 4 @.@ 7 meters ( 15 ft 5 in ) high and only usable by fighters . The lower hangar was about 20 meters ( 65 ft 7 in ) shorter than the upper one and its width ranged from 17 @.@ 5 to 20 meters ( 57 ft 5 in to 65 ft 7 in ) . Together they had a total area of 5 @,@ 545 square meters ( 59 @,@ 690 sq ft ) . Each hangar could be subdivided by five or six fire curtains and they were fitted with fire fighting foam dispensers on each side . The lower hangar was also fitted with a carbon dioxide fire suppression system . Each subdivision was provided with a pair of enclosed and armored stations to control the fire curtains and fire fighting equipment . 
