HMS Achilles
... that the British armoured cruiser HMS Achilles and the armed boarding steamer Dundee sank the German auxiliary cruiser Leopard in 1917 as it attempted to break through a British blockade?
... that the British <a href="./Armored_cruiser" id="mwExg" rel="mw:WikiLink" title="Armored cruiser">armoured cruiser</a> <b id="mwExk"><a href="./HMS_Achilles_(1905)" id="mwExo" rel="mw:WikiLink" title="HMS Achilles (1905)">HMS <i id="mwExs">Achilles</i></a></b> and the armed boarding steamer <i id="mwExw">Dundee</i> <a href="./Action_of_16_March_1917" id="mwEx0" rel="mw:WikiLink" title="Action of 16 March 1917">sank</a> the German <a href="./Armed_merchantman#Auxiliary_cruisers" id="mwEx4" rel="mw:WikiLink" title="Armed merchantman">auxiliary cruiser</a> <i id="mwEx8">Leopard</i> in 1917 as it attempted to break through a British <a href="./Blockade" id="mwEyA" rel="mw:WikiLink" title="Blockade">blockade</a>?