Overhaul is completed. Undocked. Her flight deck is enlarged and reinforced. If not earlier in May, an additional pair of support pillars are placed forward in-between the two existing pairs. (Most likely related to a catapult system, see Data Page) Her hanger areas are enlarged to accommodate the new generation of aircraft. Her arrester gear is replaced by a Type 3 system and her bridge is modernized. Four additional Type 96 twin 25-mm guns are fitted on sponsons. Her airgroup consists of 12 Mitsubishi A5M4 fighters, 24 Aichi D1A2 bombers and 36 Yokosuka B4Y1 attack planes with another 18 aircraft carried in crates as spares.
As part of a film clip of the Kido Butai enroute to Pearl Harbor in heavy seas, there is a short segment on Kaga, taken bow-on. (Must have been taken from Akagi.) It's a little fuzzy, but the three sets of pillars do appear to be already in place. HTH.