Imperial Eagle, originally named Loudoun (also spelled Louden, Loudin, and Lowden), was a 400-ton burthen (bm) British merchant ship, launched in 1774 at Liverpool. By 1780 her master was S. Rains, her owner Robertson, and her trade a transport out of London. In 1786 she underwent refitting at Shadwell Dock, Thames, London. She then sailed on maritime fur trading ventures in the late 1780s. She was under the command of Captain Charles William Barkley until confiscated in India.