USS Ericsson was an O'Brien-class destroyer built for the United States Navy prior to the American entry into World War I. The ship was the second U.S. Navy vessel named in honor of John Ericsson, the Swedish-born builder of the ironclad warship USS Monitor during the American Civil War.
USS Ericsson (DD-56), Steaming at 19.93 knots during Run No. 10 of builder's trials, 18 May 1915. Her armament has not yet been installed.
The O'Brien class of destroyers was a class of six ships designed by and built for the United States Navy shortly before the United States entered World War I. The O'Brien class was the third of five classes of destroyers that were known as the "thousand tonners", because they were the first U.S. destroyers over 1,000 long tons (1,016 t) displacement.
Lead ship of the O'Brien class, USS O'Brien
O'Brien class member Ericsson, between the closely related Tucker-class ships Jacob Jones (left) and Wadsworth, is moored by destroyer tender Melville at Queenstown, Ireland, in 1917.
O'Brien, in dazzle camouflage, escorting a convoy in 1918
Nicholson