(AM-252) USS "Insurgent" (1799) USS "Integrity" (AGOS-24) USS "Intelligent Whale" (1869) USS "Intensity" (PG-93) USS "Interceptor" (AGR-8) USS "Interdictor" (AGR-13) USS "Interpreter" (AGR-14) USS "Interrupter" (AGR-15) USS "Intrepid" (1798, 1874, 1904, CV-11) USS "Intrigue" (AM-253) USS "Invade" (AM-254) USS "Inver" () USS "Investigator" (AGR-9) USS "Invincible" (SP-3671, AGM-24, AGOS-10)
Io USS "Iolanda" (AKS-14) USS "Iolite" (PYc-24, PYc-41) USS "Iona" (, ) USS "Ionie" () USS "Ionita" () USS "Iosco" () USS "Iowa" (1864, BB-4, BB-53, BB-61) USS "Iowan" (SP-3002) USS "Ipswich" () USS "Ira Jeffery" (APD-44) USS "Iredell" (APA-242) USS "Iredell County" (LST-839) USS "Irene Forsyte" (IX-93) USS "Irex" (SS-482) USS "Iris" (1847, 1863, 1869, 1885, 1897) USS "Iro" () USS "Iron Age" () USS "Iron County" (LST-840) USS "Ironsides Jr." () USS "Ironwood" () USS "Iroquois" (, ) USS "Irwin" ()
Is USS "Isaac N.