China Naval Modernization: Implications for U.S. Navy Capabilities--Background and Issues for Congress [Updated January 22, 2020] [open pdf - 3MB]
From the Summary: "In an international security environment of renewed great power competition, China's military modernization effort, including its naval modernization effort, has become the top focus of U.S. defense planning and budgeting. China's navy, which China has been steadily modernizing for roughly 25 years, since the early to mid-1990s, has become a formidable military force within China's near-seas region, and it is conducting a growing number of operations in more-distant waters, including the broader waters of the Western Pacific, the Indian Ocean, and waters around Europe. China's navy is viewed as posing a major challenge to the U.S. Navy's ability to achieve and maintain wartime control of blue-water ocean areas in the Western Pacific--the first such challenge the U.S. Navy has faced since the end of the Cold War--and forms a key element of a Chinese challenge to the long-standing status of the United States as the leading military power in the Western Pacific."
CRS Report for Congress, RL33153
Congressional Research Service: https://crsreports.congress.gov/