The USS S-9 was a submarine built by Portsmouth Navy Yard in 1919 that was launched one year later. It was sponsored by Mrs. James E. Palmer and initially had Lieutenant Commander Thomas Shine in command. After completing duty off the northeast coast, the submarine sailed from New London, Connecticut in 1921 and proceeded through the Panama Canal and Pearl Harbor to the Philippines, eventually arriving at Cavite, Luzon. There, it joined Submarine Division 12, whose vessels had been already there for several days. In 1924, the USS S-9 departed Cavite and subsequently arrived at Mare Island, California. Afterward, it operated along the West Coast throughout 1926, mainly at San Francisco, San Pedro, and San Diego. The issue of asbestos on the USS S-9 was a very serious one, as exposure to this harmful mineral can lead to the development of numerous awful diseases, including lung cancer. People who served aboard the USS S-9 should closely monitor their health and seek medical attention as soon as they notice a new onset of distressing symptoms, as their risk of developing disease is very high. In 1931, the submarine was decommissioned and in 1937, it was eventually struck from the Naval Vessel Register.