Enlargement of the United Nations members, or were dissolved. The UN officially came into existence on 24 October 1945, after ratification of the United Nations Charter by the five permanent members of the United Nations Security Council (China, France, the Soviet Union, the United Kingdom, and the United States) and a majority of the other signatories. A total of 51 original members (or founding members) joined that year; 50 of them signed the Charter at the United Nations Conference on International Organization in San Francisco on 26 June 1945, while Poland, which was not represented at the conference, signed it on 15 October 1945. Below
USNS Mission San Francisco "Mission San Francisco" collided with the freighter "Elna II" in the Delaware River coast and was declared unsalvageable by the U.S. Navy. The ship was one of two U.S. Navy vessels named for the Franciscan mission of San Francisco de Asís located in San Francisco, California. "Mission San Francisco" was laid down on 5 May 1945 as "Contocook" under a Maritime Commission contract by Marinship Corporation, Sausalito, California; launched on 18 September 1945, sponsored by Mrs. John J. Manning; and delivered on 11 October 1945. Chartered to Deconhill Shipping Company, upon her delivery, for operations, she served until 14 April