The Department of Defense (DoD) submitted the Navy's 2015 shipbuilding plan, which covers fiscal years 2015 to 2044, to the Congress in July 2014.1 The total costs of carrying out the 2015 plan-an average of about $21 bil-lion in 2014 dollars per year over the next 30 years-would be one-third higher than the funding amounts that the Navy has received in recent decades, the Con-gressional Budget Office (CBO) estimates. The Navy's 2015 shipbuilding plan is very similar, but not identical, to its 2014 plan with respect to the Navy's total inventory goal for battle force ships, the number and types of ships the Navy would purchase, and the proposed funding to implement the plans.