USS Greer

History
United States
Namesake	James A. Greer
Builder	William Cramp & Sons, Philadelphia
Yard number	460
Laid down	24 February 1918
Launched	1 August 1918
Commissioned	31 December 1918
Decommissioned	22 June 1922
Recommissioned	31 March 1930
Decommissioned	13 January 1937
Recommissioned	4 October 1939
Decommissioned	19 July 1945
Stricken	13 August 1945
Fate	Sold for scrapping, 30 November 1945
General characteristics
Class and type	Wickes-class destroyer
Displacement	1,165 tons
Length	314 ft 4 in (95.81 m)
Beam	30 ft 11 in (9.42 m)
Draft	9 ft (2.74 m)
Speed	35 knots (65 km/h)
Complement	133 officers and enlisted
Armament	4 × 4"/50 calibre guns (102 mm), 1 × 3 in (76 mm), 12 × 21 inch (533 mm) torpedo tubes.

USS Greer (DD–145) was a Wickes-class destroyer in the United States Navy, the first ship named for Rear Admiral James A. Greer (1833–1904). In what became known as the "Greer incident," she became the first US Navy ship to fire on a German ship, three months before the United States officially entered World War II. The incident led President Franklin D. Roosevelt to issue what became known as his "shoot-on-sight" order. Roosevelt publicly confirmed the "shoot on sight" order on 11 September 1941, effectively declaring naval war against Germany and Italy in the Battle of the Atlantic.^{[citation needed]}

Greer was launched by William Cramp & Sons Ship & Engine Building Co., Philadelphia, 1 August 1918; sponsored by Miss Evelina Porter Gleaves, daughter of Rear Admiral Albert Gleaves; and commissioned 31 December 1918.