Nero
... that a whole new shipbuilding facility had to be created to build the 90-metre (300 ft) luxury yacht Nero?
... that a whole new shipbuilding facility had to be created to build the <span about="#mwt50" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"90"},"2":{"wt":"m"},"adj":{"wt":"on"}},"i":0}}]}' id="mwDxc" typeof="mw:Transclusion">90-metre (300</span><span about="#mwt50" typeof="mw:Entity"> </span><span about="#mwt50">ft)</span> luxury yacht <i id="mwDxg"><b id="mwDxk"><a href="./Nero_(yacht)" id="mwDxo" rel="mw:WikiLink" title="Nero (yacht)">Nero</a></b></i>?