They returned home on 14 June and the IJN began preliminary planning to replace the lost carriers with hybrid carriers converted from battleships . The sisters were selected for conversion and detached from the division on 14 July in preparation . They remained on " standby alert " until the actual conversions began . Ise was converted at Kure Naval Arsenal from 23 February to 5 September 1943 and Hyūga at Sasebo Naval Arsenal from 2 May to 30 November .