1st Navy Jack

In the fall of 1775, as the first ships of the Continental Navy readied in the Delaware River, Commodore Esek Hopkins issued a set of fleet signals. Among these signals was an instruction directing his vessels to fly a striped Jack and Ensign at their proper places. The custom of the jack-type flag had originated with the Royal Navy in the 15th century or earlier; such was the likely source of Hopkins' inspiration. This first U.S. Navy Jack has traditionally been shown as consisting of 13 horizontal alternating red and white stripes with a superimposed rattlesnake and the motto "Don't Tread on Me."