The Government Accountability Office has found the Navy understates the costs of ship deferred depot maintenance -- adding up to nearly $1.8 billion in maintenance backlog. In its 2021 financial reports, the Navy understated the amount of its ship deferred depot maintenance by about $1.6 billion, according to a GAO report released today . “The Navy reported only about $181 million in unfunded ship deferred maintenance in its 2021 annual financial report even though estimates it prepared for GAO show...