TUNA, and GUDGEON flanking the submarine tender USS FULTON all of which were Mare Island built.
She was seen at the forefront of the late 1930s U.S. Navy submarine force, as seen below in this period illustration by I.R. Lloyd of Fulton steaming alongside the Tambor-class submarines USS Gudgeon (SS-211) and USS Tuna (SS-203) under a protective cloud of flying boats.