1943 - USS Bluefish (SS 222) sinks Japanese oiler Ichiyu Maru in the Java Sea.
1944 - USS Block Island (CVE 106) is commissioned, serving until decommissioned in 1954. Struck from the Navy list in 1959, ex-Block Island is sold to Kowa Koeki Co., Ltd., Mitsubishi Naka, of Chiyoda-Ku, Tokyo and scrapped a year later.
1944 - USS Razorback (SS 394) attacks a Japanese convoy going from Manila to Takao about 60 miles southeast of Formosa and sinks the destroyer Kuretake in the Bashi Channel. The Japanese cargo ships Brazil Maru and Oi Maru are also damaged during this attack.
1945 - USS Greenling (SS 213) attacks a Japanese convoy 180 miles northeast of Manus, Admiralty Islands and sinks Army cargo ship Hiteru Maru and damages cargo ship Ryufuku Maru while USS Thresher (SS 196) sinks the Japanese freighter Hachian Maru west of Mata Siri Island, off the southern tip of Borneo.
1959 - The first fleet ballistic missile submarine, USS George Washington (SSBN-598), is commissioned.