Amur class minelayers
... that the Amur class minelayers were the first purpose-built, ocean-going minelayers when they were laid down in 1898 for the Imperial Russian Navy?
... that the <b id="mwCfU"><a class="mw-redirect" href="./Amur_class_minelayer_(1898)" id="mwCfY" rel="mw:WikiLink" title="Amur class minelayer (1898)"><i id="mwCfc">Amur</i> class minelayers</a></b> were the first purpose-built, ocean-going <a href="./Minelayer#Naval_minelayers" id="mwCfg" rel="mw:WikiLink" title="Minelayer">minelayers</a> when they were <a class="mw-redirect" href="./Laid_down" id="mwCfk" rel="mw:WikiLink" title="Laid down">laid down</a> in 1898 for the <a href="./Imperial_Russian_Navy" id="mwCfo" rel="mw:WikiLink" title="Imperial Russian Navy">Imperial Russian Navy</a>?