Supplying Help to Infrastructure in Ports, Yards, and America's Repair Docks Act of 2021 or the SHIPYARD Act This bill provides supplemental appropriations to the Department of Defense (DOD) for improving naval shipyard infrastructure. The bill designates the funding as emergency spending, which is exempt from discretionary spending limits. DOD must make this funding directly available to the Department of the Navy. Funds must be used for specified purposes, including for public and private shipyard facilities, docks, dry docks, capital equipment improvements, and dredging efforts needed by shipyards.