The introduction of the 11-page Shipyard Act comes after President Joe Biden proposed a $2.25 trillion infrastructure package and Republicans made a $568 billion counteroffer.
The shipbuilding plan released in December would give the fleet more than 400 ships by 2051, at a cost of $1 trillion, and would require annual funding "unprecedented since World War II," the CBO said.
A Congressional Budget Office report released this month raises questions about if and how the Navy will ever achieve the growth laid out in a report to lawmakers earlier this year.
The military buildup President Donald Trump has called for would cost $683 billion more than current spending plans over the next decade, according to a new analysis by the Congressional Budget Office.