The USS S-23 was a United States Navy submarine, part of the S-class fleet, commissioned in 1924. Designed for coastal defense, it was equipped with torpedoes and had a displacement of about 1,000 tons when submerged. The submarine was primarily used for training and patrolling during its service. Throughout its operational life, the USS S-23 conducted various exercises and missions, contributing to the development of submarine tactics. It was decommissioned in 1945 and later scrapped, marking the end of its service in the U.S. Navy.