<p>Images of WWI in the popular consciousness normally involve the bloody attrition of trench warfare, the miles of mud, the shattered earth, the tangled miles of barbed wire. However there was another significant arena of war - the battle for control of the sea.<br>In 1914 at the beginning of the war, Britain's maritime supremacy had remained unchallenged for around a hundred years. Many expected another Battle of Trafalgar but advances in ...