(AM-4: dp. 950 (est.), 1. 187'10; b. 35'6; dr. 9'9Ms; s. 14 k. (est.); cpl. 78; a. 2 3; cl. Lapwing)
Swallow (AM-4) was laid down at New York City on 18 March 1918 by the Todd Shipyard Corp.; launched on Independence Day 1918, sponsored by Miss Sara V. Brereton, and commissioned on 8 October 1918, Lt. B. C. Philips in command.
Following commissioning, Swallow underwent minor adjustments and prepared for foreign service. On 6 April 1919, she steamed out of Boston Harbor, bound for Inverness, Scotland. There she joined the Minesweeping Detachment of the Northern Barrage. For most of the remainder of 1919. Swallow sweet mines from the North Sea Barrage laid by the Allied and Associated Powers during World War I.
The minesweeper returned to the United States late in 1919 and put into the navy yard at Charleston, S.C., for overhaul and repairs. Early in 1920, she sailed for the west coast and then north to Bremerton, Wash. For the next 18 years, Swallow operated along the northwestern Pacific coast of North America spending much of her time in Alaskan waters. In 1934 she became a unit of the Aleutian Islands Survey Expedition.
On 19 February 1938, Swallow ran aground at Kanaga Island and was stranded there. Salvage efforts soon proved impracticable and her name was struck from the Navy list on 5 May 1938.