This is the IJN Unyo, which was used mainly as a transport for Army units, hence the selection of army fighters and bombers on deck.
The kit is the 1/700 Aoshima kit, very crude, needs a lot of work to make it look decent. A bit of photoetch and careful painting, and a decent base completes the package. The aircraft are from Pit Road, Photoetch, if I recall was Tom's.