Converting a Centaur-class carrier into a heavy-lift ship

How could a Centaur-class carrier be converted into a heavy-lift crane ship?

Remove substantial deck and superstructure weight, then add stabilizing bulges before installing the crane.

The crane's high and shifting load would govern the rebuild. Much of the deck and upper structure would have to be cut down before installing the lifting gear. Removing that topside weight would create margin for the crane. Hull bulges could then provide the stability needed as heavy loads moved through the crane's working arc.