The upcoming Columbia class are nuclear-powered ballistic missile submarines of the United States Navy, designed to replace the Ohio class. Construction of the first vessel began on 1 October 2020, and is scheduled to enter service in 2031.
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Foto: Wikimedia Commons — U.S. Navy illustration/released, NAVSEA, U.S. Navy photo by Journalist 2nd Class John Watts. (proste licence / javna domena)
