How would a major British infrastructure upgrade in 1930 affect the Second World War fleet?
Short answerIf it enlarged the dry docks substantially, the King George V class, Vanguard, and probably the carriers would be larger.
NotesThe result depends on the scale of the proposed infrastructure investment. A substantial increase in dry-dock dimensions would remove a constraint on ship size. The King George V class would probably grow, and Vanguard is expected to become larger as well. Aircraft carriers could also benefit from the enlarged facilities.