▁had ▁several ▁design ▁and ▁configuration ▁def ic ien cies ▁which ▁limited ▁their ▁effect iveness . ▁The ▁I J N ' s ▁fleet ▁combat ▁air ▁pat rol ▁( C AP ) ▁consisted ▁of ▁too ▁few ▁f ighter ▁aircraft ▁and ▁was ▁ham per ed ▁by ▁an ▁in ade qu ate ▁early ▁warning ▁system , ▁including ▁a ▁lack ▁of ▁rad ar . ▁Po or ▁radio ▁communic ations ▁with ▁the ▁f ighter ▁aircraft ▁in hib ited ▁effective ▁command ▁and ▁control ▁of ▁the ▁C AP . ▁The ▁carri ers ' ▁esc ort ing ▁war ships ▁were ▁deployed ▁as ▁visual ▁sc outs ▁in ▁a ▁ring ▁at ▁long ▁range , ▁not ▁as ▁close ▁anti - air craft ▁esc ort s , ▁as ▁they ▁lack ed ▁training , ▁doctrine , ▁and ▁sufficient ▁anti - air craft ▁guns . ▁These ▁def ic ien cies ▁would ▁eventually ▁do om ▁K aga ▁and ▁other ▁First ▁Air ▁Fle et ▁carri ers . ▁ ▁Organ ization ▁ ▁As ▁a ▁Car rier - B ased ▁Fle et ▁The ▁First ▁Air ▁Fle et ▁( D ai - ichi ▁K ō k ū ▁Kant ai ) ▁was ▁a ▁major ▁component ▁of ▁the ▁Com b ined ▁Fle et ▁( R eng ō ▁Kant ai ). ▁When ▁created ▁on ▁ 1 0 ▁April ▁ 1 9 4 1 , ▁it ▁had ▁three ▁k ō k ū ▁sent ai ▁( air ▁fl ot illas ; ▁in ▁the ▁case ▁of ▁aircraft ▁carri ers , ▁car rier ▁divisions ): ▁On ▁that ▁date , ▁First ▁K ō k ū ▁Sent ai ▁consisted ▁of ▁ ▁and