O'Hara's Battery
... that the 9.2 inch naval gun at O'Hara's Battery, Gibraltar, was capable of firing shells from Europe to Africa?
... that the <a class="mw-redirect" href="./BL_9.2_inch_gun_Mk_IX–X" id="mwAi4" rel="mw:WikiLink" title="BL 9.2 inch gun Mk IX–X">9.2<span id="mwAi8" typeof="mw:Entity"> </span>inch naval gun</a> at <b id="mwAjA"><a href="./O'Hara's_Battery" id="mwAjE" rel="mw:WikiLink" title="O'Hara's Battery">O'Hara's Battery</a></b>, <a href="./Gibraltar" id="mwAjI" rel="mw:WikiLink" title="Gibraltar">Gibraltar</a>, was capable of firing shells from Europe to Africa?