Etna-class protected cruisers
... that the Italian Etna-class protected cruisers had a belt of cork at their waterline, which was intended to seal holes by swelling through water absorption after being hit?
... that the Italian <b id="mwHts"><a about="#mwt84" class="mw-redirect" data-mw='{"parts":[{"template":{"target":{"wt":"sclass","href":"./Template:Sclass"},"params":{"1":{"wt":"Etna"},"2":{"wt":"protected cruiser"}},"i":0}},"s"]}' href="./Etna-class_protected_cruiser" id="mwHtw" rel="mw:WikiLink" title="Etna-class protected cruiser" typeof="mw:Transclusion"><i>Etna</i>-class</a><span about="#mwt84"> </span><a about="#mwt84" href="./Protected_cruiser" id="mwHt0" rel="mw:WikiLink" title="Protected cruiser">protected cruisers</a></b> had a belt of <a class="mw-redirect" href="./Cork_material" id="mwHt4" rel="mw:WikiLink" title="Cork material">cork</a> at their <a href="./Waterline" id="mwHt8" rel="mw:WikiLink" title="Waterline">waterline</a>, which was intended to seal holes by swelling through water <a href="./Sorption" id="mwHuA" rel="mw:WikiLink" title="Sorption">absorption</a> after being hit?