 On 28 January 1915 USRC "Unalga" became USCGC "Unalga" by virtue of the establishment of the United States Coast Guard by merger of the United States Revenue Cutter Service with the United States Life-Saving Service.In February 1915 additional duties were assigned enforcing the North Pacific Fur Seal Convention of 1911 which related to prohibited pelagic sealing in the Bering Sea.Patrol work during 1915 and 1916 consisted of summers in Alaskan waters with sealing treaty duties, law enforcement, search and rescue, medical assistance to fishermen and others, and the delivery of mail to remote camps.