Coast Guard Polar Security Cutter (Polar Icebreaker) Program: Backgroundand Issues for Congress [Updated September 15, 2021] [open pdf - 2MB]
From the Summary: "The Coast Guard Polar Security Cutter (PSC) program is a program to acquire three new PSCs (i.e., heavy polar icebreakers), to be followed years from now by the acquisition of up to three new Arctic Security Cutters (ASCs) (i.e., medium polar icebreakers). The PSC program has received a total of $1,754.6 million (i.e., about $1.8 billion) in procurement funding through FY2021, including $300 million that was provided through the Navy's shipbuilding account in FY2017 and FY2018. With the funding the program has received through FY2021, the first two PSCs are now fully funded. The Coast Guard's proposed FY2022 budget requests $170.0 million in procurement funding for the PSC program, which would be used for, among other things, procuring long leadtime materials (LLTM) for the third PSC."
CRS Report for Congress, RL34391
Congressional Research Service: https://crsreports.congress.gov/