Sailors aboard the Ohio-class ballistic-missile submarine USS Maine (SSBN 741) host a virtual tour.
The Ohio class of nuclear-powered submarines includes the United States Navy's 14 ballistic missile submarines (SSBNs) and its four cruise missile submarines (SSGNs). Each displacing 18,750 tons submerged, the Ohio-class boats are the largest submarines ever built for the U.S. Navy.
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Courtesy Video - Defense.gov