DD 66: dp. 1075; l. 315'3"; b. 30'7''; dr. 9'9"; s. 30.3k.; cpl 130; a. 4 4",12 12" TT.; cl. Sampson)

The second Allen (DD 66) was launched 5 December 1916 by Bath Iron Works, Bath, Maine; sponsored by Miss Harriet Allen Butler and Miss Dorthea Dix Allen, great-grandnieces of Master Commandant Allen; commissioned 24 January 1917, Lieutenant Commander S. W. Bryant in command; and reported to the Atlantic fleet.

Between January and June 1917 Allen patrolled and escorted convoys along the east coast and in Cuban waters. On 14 June 1917 she sailed from New York as an escort for Troop Convoy Group 3, a part of the first Troop Convoy of Expeditionary Force from the U. S. to France. During the remainder of World War I she operated with the Naval Forces in European waters, performing patrol and anti-submarine duty, and escorting convoys. In December 1918 Allen joined the Presidential Convoy and assisted in escorting George Washington, with the President of the United States embarked, into the harbor of Brest, France.

Returning to the United States early In 1919, Allen operated with the Atlantic Fleet along the eastern seaboard until placed out of commission 22 June 1922. Recommissioned 23 June 1925 she trained Naval Reservists of the District of Columbia until March 1928, when she again went out of commission at Philadelphia.

On 23 August 1940 Allen was recommissioned and, on 4 November, she was ordered to join Destroyer Division 80 on the west coast. On 9 December 1940 she proceeded to Pearl Harbor She was moored at Pearl Harbor on 7 December 1941 and underwent the Japanese attack without sustaining any casualties or damage. Allen remained or duty in the Pearl Harbor Defensive Sea Area until August 1945, screening the sorties of various ships and convoys, patrolling on the Oahu picket line, and conducting gunnery and anti-submarine exercises.

She departed Pearl Harbor 20 August 1945 and arrived at Philadelphia on 13 September. She was decommissioned at Philadelphia 15 October 1945 and sold 26 September 1946.