Navy pays tribute to once-secret submarine now on display at Connecticut museum

Industries Associated Press

A submarine that was among the most secretive vessels in the U.S. undersea force has been put on display at the Navy's Submarine Force Library and Museum in Groton.

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Adm. Jonathan Greenert, chief of naval operations, spoke to a gathering Wednesday in front of a portion of the tiny NR-1 submarine that was launched in 1969. He was engineer of the nuclear-powered NR-1.

Greenert called it a "technical marvel" that expanded knowledge of engineering and technology. He said the sub made ocean floor exploration possible.

He credited industry, specifically NR-1 maker Electric Boat, with making it possible for the U.S. to own the undersea domain.

The NR-1 was used in expeditions, including recovering parts of the Challenger shuttle destroyed in 1986. It was taken out of service in 2008.