N Atlas SD45 Silver Chicago & Northwestern #6503 - 40005987 Props Navy in 1940

Navy in 1940

Twin turbofan engine assemblies

Between the two wars several Navies undertook development programs to implement flotillas of motor torpedo boats capable of carrying out patrol and attack missions

211th Squadron

N Atlas SD45 Silver Chicago & Northwestern #6503 - 40005987 Props Navy in 1940During the 1960s the demand for high HP locomotives drove EMD and competitor GE to continue to push the limits of locomotive design. During the time when 3,000 HP 16 cylinder prime movers were the norm, EMD made the decision to introduce a 20 cylinder, 3600 HP design. Introduced in 1965, the SD45, with its distinctive flared radiator design, was purchased by many major US railroads, totaling over 1,200 units until the SD45 2 replaced it in the EMD