The NS Mayport Quarterdeck (CDO/OOD) is located in Building 1 on Massey Ave.
Personnel with PCS orders to Naval Station Mayport should report here on arrival. Those reporting to a tenant command should report to that command’s quarterdeck. Personnel ordered to a ship should report directly to their ship if in port. If the ship is not in, check in with Mayport Naval Station’s quarterdeck for assistance.
Source: Mayport CNIC Website