Of the world's 36 aircraft carriers we own half. And our Nimitz Class carriers are larger and more capable than any others. Our allies, the British, have a somewhat smaller carrier, the Queen Elizabeth, ready to go into service sometime in 2017. Our potential enemy, Russia, has just one relatively obsolete carrier with a record of mechanical failure. It is accompanied by a seagoing tugboat at all times, just in case. Russia sold an obsolete aircraft carrier to a Chinese scrap metal firm some years back, but ultimately the Chinese government obtained the ship and put it into service as their lone aircraft carrier.