Design and Construction
Ericsson was authorized in March 1913 as the sixth and final ship of the O'Brien class which was an improved version of the Cassin-class destroyers authorized in 1911. Construction of the vessel was awarded to New York Shipbuilding of Camden, New Jersey, which laid down her keel on 10 November 1913. Just over nine months later, on 22 August 1914, Ericsson was launched by sponsor Mrs. J. Washington Logue, wife of the Pennsylvania Congressman. The ship was named in honor of John Ericsson, the builder of the ironclad warship USS Monitor during the American Civil War, and was the second U.S. Navy ship named for the Swedish native. As built, the destroyer was 305 feet 3 inches (93.04 m) in length, 31 feet 1 inch (9.47 m) abeam, and drew 9 feet 6 inches (2.90 m). The ship had a standard displacement of 1,090 long tons (1,110 t) and displaced 1,171 long tons (1,190 t) when fully loaded.
Ericsson had two Zoelly steam turbines that drove her two screw propellers, and an additional triple-expansion steam engine connected to one of the propeller shafts for cruising purposes. Four oil-burning White-Forster boilers powered the engines, which could generate 17,000 shaft horsepower (13,000 kW), moving the ship at up to 29 knots (54 km/h).
Ericsson's main battery consisted of four 4-inch (102 mm)/50 Mark 9 guns, with each gun weighing in excess of 6,100 pounds (2,800 kg). The guns fired 33-pound (15 kg) armor-piercing projectiles at 2,900 feet per second (880 m/s). At an elevation of 20°, the guns had a range of 15,920 yards (14,560 m).
Ericsson was also equipped with eight 21-inch (533 mm) torpedo tubes. The General Board of the United States Navy had called for two anti-aircraft guns for the O'Brien-class ships, as well as provisions for laying up to 36 floating mines. From sources, it is unclear if these recommendations were followed for Ericsson or any of the other ships of the class.
Read more about this topic: USS Ericsson (DD-56)
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