On 23 January 1968, Banner-class environmental research ship USS Pueblo (AGER-2) was attacked and captured by North Korea in the 'Pueblo incident'.
Pueblo, still held by North Korea today, officially remains a commissioned vessel of the United States Navy. Since early 2013, the ship has been moored along the Potong River in Pyongyang, and used there as a museum ship at the Pyongyang Victorious War Museum. Pueblo is the only ship of the U.S. Navy still on the commissioned roster currently being held captive. Read more
On 22 January 1985, Japanese Yūshio-class submarine JDS Akishio (SS-579) was launched at Mitsubishi Heavy Industries.
On 22 January 1979, Russian Tango-class submarine B396 was laid down at the Gorky shipyard
On 22 January 1992, Portuguese 50 gun frigate Dom Fernando II e Glória's hull was removed from the mud-flats and set afloat again, placed in a floating dock and transported to the dry dock of the Arsenal of Alfeite first, and in 1993 to the Ria-Marine shipyards in Aveiro, where it remained for the next 5 years being restored.
Museum ship at CCM - Comissão Cultural de Marinha, Almada, Portugal
On 21 January 1971, Gato-class submarine, USS Cavalla (SS-244) was transferred to the Texas Submarine Veterans of World War II, and now resides at Seawolf Park on Pelican Island, just north of Galveston, Texas.
On 21 January 1954, the world's first operational nuclear-powered submarine USS Nautilus SSN-571 was launched at General Dynamics, Groton, CT, sponsored by Mamie Eisenhower, First Lady of the United States, wife of 34th President Dwight D. Eisenhower.
On 21 January 1943, Essex-class aircraft carrier USS Yorktown CV-10 was launched at Newport News Shipbuilding, sponsored by Eleanor Roosevelt.