One of a kind nuclear sub to be inactivated at shipyard

A one-of-a-kind, nuclear-powered undersea research and ocean engineering submarine will soon make its way to the Portsmouth Naval Shipyard where it will gradually be inactivated after nearly 40 years of exploring the seas.

The NR-1, a U.S. Navy nuclear-powered exploration sub, is scheduled to arrive at the shipyard in early December, according to Gary Hildreth, a public affairs spokesman for the shipyard.

A specific date on the submarine's arrival will not be released until 24 hours prior, said Hildreth, and the boat is expected to stay at the shipyard for one year.

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