Mines from <a href="https://en.wikipedia.org/wiki/SM_U-73" id="mwiw" rel="mw:WikiLink" title="SM U-73">SM U-73</a> sink <a href="https://en.wikipedia.org/wiki/HMHS_Britannic" id="mwjA" rel="mw:WikiLink" title="HMHS Britannic">HMHS <i id="mwjQ">Britannic</i></a>, the largest ship lost in the <a href="https://en.wikipedia.org/wiki/World_War_I" id="mwjg" rel="mw:WikiLink" title="World War I">First World War</a>.