RMS AQUITANIA. Launch, April 21st, 1913. The Aquitania was the third of the Cunard Line express ocean liners (after the Mauretania and Lusitania), and the last four-stack liner to be built. Her four trade-mark funnels were added later. She could carry over 2000 passengers on Cunard's weekly transatlantic service. Photographed by Bedford Lemere.