Shipyard Machine Shop – 1902 Railroad Track – 1917 Plate Shop – 1917 Main Office – 1917 Main Yard – 1925 Main Yard – 1929 Main Yard – 1936 Main Yard – 1941 Main Yard – 1944 Main Yard – 1945 Hardings – 1954 Main Yard – 1954 Assembly Building – 1957 Main Yard – 1957 Hardings – 1971 Crane Assembly – 1971 Main Yard – 1974 Main Yard – 1975 Main Yard – 1979 Portland Repair Facility-1982 Portland Repair Facility-1984 DDG 51 in Portland – 1990 Harding/EBMF/CW – 1990 Main Yard – 1998 Main Yard – 2018 Main Yard – 2019 Main Yard – 2021 Shipyard – 2022