RMS Queen Mary is a retired ocean liner that sailed primarily on the North Atlantic Ocean from 1936 to 1967 for the Cunard Line (known as Cunard-White Star Line when the vessel entered service). Built by John Brown & Company in Clydebank, Scotland, Queen Mary along with her running mate, the RMS Queen Elizabeth, were built as part of Cunard's planned two-ship weekly express service between Southampton, Cherbourg, and New York City. The two ships were a British response to the superliners built by German and French companies in the late 1920s and early 1930s.