HMS Agamemnon
... that the Royal Navy ship of the line HMS Agamemnon ran aground in both the first and second Battles of Copenhagen, in 1801 and 1807, respectively?
... that the <a href="./Royal_Navy" id="mwGUI" rel="mw:WikiLink" title="Royal Navy">Royal Navy</a> <a href="./Ship_of_the_line" id="mwGUM" rel="mw:WikiLink" title="Ship of the line">ship of the line</a> <b id="mwGUQ"><a about="#mwt29" data-mw='{"parts":[{"template":{"target":{"wt":"HMS","href":"./Template:HMS"},"params":{"1":{"wt":"Agamemnon"},"2":{"wt":"1781"},"3":{"wt":"6"}},"i":0}}]}' href="./HMS_Agamemnon_(1781)" id="mwGUU" rel="mw:WikiLink" title="HMS Agamemnon (1781)" typeof="mw:Transclusion">HMS<span typeof="mw:Entity"> </span><i>Agamemnon</i></a></b> ran aground in both the <a href="./Battle_of_Copenhagen_(1801)" id="mwGUY" rel="mw:WikiLink" title="Battle of Copenhagen (1801)">first</a> and <a href="./Battle_of_Copenhagen_(1807)" id="mwGUc" rel="mw:WikiLink" title="Battle of Copenhagen (1807)">second Battles of Copenhagen</a>, in 1801 and 1807, respectively?