The first <a href="https://en.wikipedia.org/wiki/Nuclear_marine_propulsion" id="mwsg" rel="mw:WikiLink" title="Nuclear marine propulsion">nuclear-powered</a> submarine, the <a about="#mwt63" data-mw='{"parts":[{"template":{"target":{"wt":"USS","href":"./Template:USS"},"params":{"1":{"wt":"Nautilus"},"2":{"wt":"SSN-571"},"3":{"wt":"6"}},"i":0}}]}' href="https://en.wikipedia.org/wiki/USS_Nautilus_(SSN-571)" id="mwsw" rel="mw:WikiLink" title="USS Nautilus (SSN-571)" typeof="mw:Transclusion">USS<span typeof="mw:Entity"> </span><i>Nautilus</i></a>, is <a href="https://en.wikipedia.org/wiki/Ceremonial_ship_launching" id="mwtA" rel="mw:WikiLink" title="Ceremonial ship launching">launched</a> in <a href="https://en.wikipedia.org/wiki/Groton,_Connecticut" id="mwtQ" rel="mw:WikiLink" title="Groton, Connecticut">Groton, Connecticut</a> by <a href="https://en.wikipedia.org/wiki/Mamie_Eisenhower" id="mwtg" rel="mw:WikiLink" title="Mamie Eisenhower">Mamie Eisenhower</a>, the <a href="https://en.wikipedia.org/wiki/First_Lady_of_the_United_States" id="mwtw" rel="mw:WikiLink" title="First Lady of the United States">First Lady of the United States</a>.