ended in January 1919 when she was scheduled for inactivation. Decommissioned on 2 April, the boat was designated as a target for testing depth charges and ordnance nets in Niantic Bay, Connecticut. During inspection by a six-man maintenance crew on 30 July, the boat suddenly flooded and sank at her moorings in Two Tree Channel near Niantic Bay. She went down in , drowning three of the inspection crew. Too deep and too old to salvage, the submarine was struck from the Naval Vessel Register on 11 September. References External links On Eternal Patrol: USS G-2 United States G-class submarines World War I submarines of the United States Shipwrecks of the Connecticut coast Ships built in Bridgeport, Connecticut 1912 ships Maritime incidents in 1919