America’s undersea edge is facing a serious stress test. Nearly 40% of U.S. attack submarines are reportedly stuck in ports awaiting repairs as China rapidly expands its naval power and Indo-Pacific reach. Delays, dry dock shortages, rising overhaul costs, and workforce gaps are fueling fears over America’s ability to deter Beijing and defend Taiwan in a future crisis. From USS Boise’s failed refit to Virginia-class delays, the U.S. Navy’s maintenance crisis is now raising alarms across the Pentagon and allied capitals. Is Washington losing the underwater race to China?