- The distance traveled or sailed eastward.
Probably earlier than the 17th century.
Ships traveling to Australia via the Cape of the Good Hope, or traveling from Australia to the North Atlantic via Cape Horn were said to be “running their easting down.”
King, D., Hattendorf, J.B, & Estes, J.W. (1997). A Sea of Words: A Lexicon and Companion for Patrick O’Brian’s Seafaring Tales (2nd Ed.). Owl Books.
Rogers, J.G. (1985). Origins of Sea Terms. Mystic Seaport.