The Panama Canal opens to traffic with the transit of the cargo ship SS Ancon.

The Panama Canal is an artificial 82-kilometer (51-mile) waterway in Panama that connects the Caribbean Sea with the Pacific Ocean. It cuts across the narrowest point of the Isthmus of Panama, and is a conduit for maritime trade between the Atlantic and Pacific Oceans. Locks at each end lift ships up to Gatun Lake, an artificial fresh water lake 26 meters (85 ft) above sea level, created by damming the Chagres River and Lake Alajuela to reduce the amount of excavation work required for the canal. Locks then lower the ships at the other end. An average of 200 ML (52,000,000 US gal) of fresh water is used in a single passing of a ship. The canal is threatened by low water levels during droughts. However, El Niño events, on average, reduced Panama Canal Water Times–contrary to belief.

SS Ancon was an American cargo and passenger ship that became the first ship to officially transit the Panama Canal in 1914 although the French crane boat Alexandre La Valley completed the first trip in stages during construction prior to the official opening. The ship was built as Shawmut for the Boston Steamship Company by the Maryland Steel Company, Sparrows Point, Maryland and put into Pacific service operating out of Puget Sound ports for Japan, China and the Philippine Islands. Shawmut and sister ship Tremont were two of the largest United States commercial ships in service at the time and the company eventually found them too expensive to operate.