HMS Invincible was a battlecruiser of the British Royal Navy, the lead ship of her class of three, and the first battlecruiser to be built by any country in the world. In the First World War she participated in the Battle of Heligoland Bight in a minor role as she was the oldest and slowest of the British battlecruisers present. She fired on the light cruiser Cöln, but did not hit her before Cöln was sunk by the battlecruiser Lion. During the Battle of the Falkland Islands, Invincible and her sister Inflexible sank the armoured cruisers Scharnhorst and Gneisenau almost without loss to themselves, despite numerous hits by the German ships.