Submarine chaser SC 4 was built at the Naval Station in New Orleans, and was commissioned at New Orleans on 19 February, 1918. This chaser served in the USS Salem Group.
This photo shows SC 1 and SC 4 in Charleston, SC.
Photo from the collection of subchaser crewman Benjamin Lihue (Hugh) Gray. Thanks to his grandson, Gary McGraw, for submitting the photo scans to The Subchaser Archives.