Annual shipbuilding appropriations must increase by 31% to 40% over their current five-year average for the Navy to achieve any of the three alternatives presented in its latest 30-year shipbuilding plan, according to a new Congressional Budget Office analysis that points to submarine acquisitions as a leading driver of cost growth. According to CBO’s estimate, total shipbuilding costs must average $33.6 billion to $36.1 billion over the next three decades for the Navy to deliver on its shipbuilding goals, with...