(MB: t. 29 (gross); l. 65'; b. 13'; dr. 5' (forward); s. 13 mph.; cpl. 8; a. 1 3-pdr., 2 mg.)
Yarrow (SP-1010)—a wooden-hulled motorboat constructed in 1913 by Kargard of Chicago, 111.—was formally acquired by the Navy on free lease on 27 August 1917 from Mr. K. D. Clark, exactly a month after she was commissioned on 27 July 1917. Yarrow served as a section patrol craft in the 9th Naval District cruising the waters of Lake Michigan during World War I. Her naval career continued after the armistice, and she was not returned to her owner until 7 March 1919. Simultaneously with the return, her name was struck from the Navy list.