Complex sentence: The United Kingdom returned "Caicos" to the U.S. Navy on 12 December 1945 and transferred for disposal to the U.S. Maritime Commission, which sold her in June 1946 to the N. B. Wolcott firm of New York City for scrapping.
Split into simpler sentences: The United Kingdom returned "Caicos" to the U.S. Navy on 12 December 1945. The U.S. Navy then transferred her for disposal to the U.S. Maritime Commission, which sold her in June 1946 to the N. B. Wolcott firm of New York City for scrapping.