Ise and Hyuga had been ordered in 1914 and laid down in 1915. They were completed in 1917 and 1918. Their age adds another objection to investing in the hybrid conversion. In this assessment, they should already have left service before the conversion became an option.
Notable Point · 31:34-32:13
The age of Ise and Hyuga at conversion
The ships' First World War origins reinforce the objection to spending further resources on their conversion.