The U.S. Bureau of Fisheries (BOF) renamed the vessel USFS Curlew, and, after modifying her for fisheries duty, assigned her to the BOF station at Cape Vincent, New York, for use in fish-culture work on Lake Ontario.[3]
During the summer of 1922, the Cape Vincent station installed electric lighting aboard Curlew and attached metal plates to the forward part of her hull at the waterline to protect her planking.[4] On 24 September 1923, Curlew rescued 58 passengers from the Canadian steamboatWaubic, which had run aground in fog at Bear Point about 8 nautical miles (15 km; 9.2 mi) from Cape Vincent while making her daily run between Cape Vincent and Kingston, Ontario, Canada.[5] During fiscal year 1928, which ran from 1 July 1927 to 30 June 1928, Curlew underwent extensive repairs and alterations and her original engine was replaced by a diesel engine.[6]
United States Department of Commerce records list Curlew as being in the Bureau of Fisheries fleet as of 30 June 1937[7] but not as of 30 June 1938,[8] indicating that the Bureau retired her sometime during fiscal year 1938 (1 July 1937–30 June 1938).