Black Swan dredge
... that repairs made to the Black Swan dredge in the 1880s included replacing the steel bottom with Jarrah?
... that repairs made to the <b id="mwBqU"><a href="./Black_Swan_(dredge)" id="mwBqY" rel="mw:WikiLink" title="Black Swan (dredge)">Black Swan dredge</a></b> in the 1880s included replacing the steel bottom with <a class="mw-redirect" href="./Jarrah" id="mwBqc" rel="mw:WikiLink" title="Jarrah">Jarrah</a>?