Serapis is a name given to an unconventional, early United States ensign flown from the captured British frigate Serapis.
At the 1779 Battle of Flamborough Head, U.S. Navy Captain John Paul Jones captured the Serapis, but his own ship, the Bonhomme Richard sank, and her ensign had been blown from the mast into the sea during the battle. Jones, now commanding the Serapis without an ensign, sailed to the island port of Texel, which was run by the neutral Dutch United Provinces. Officials from the United Kingdom argued that Jones was a pirate, since he sailed a captured vessel flying no known national ensign.
A year earlier, Arthur Lee, American commissioner in France, wrote in a letter to Henry Laurens that the U.S. ships' "colors should be white, red, and blue alternately to thirteen" with a "blue field with thirteen stars" in the canton.Benjamin Franklin and John Adams, ambassadors to France, wrote a similar description of United States flags:
Apparently based upon this description, a recognizable ensign was quickly made to fly aboard the Serapis, and Dutch records edited to include a sketch of the ensign to make it official. The Dutch could, therefore, recognize the flag and avoid the legal controversy of Jones' captured ship. The Dutch records survive and provide us with the original sketch of the ensign. The sketch is labeled "Serapis" and dated 5 October 1779, just one day after the Francis Hopkinson style flag, labeled "Alliance" (a ship in Jones' fleet), was entered.
There are five known illustrations of American flags with tri-color stripes. Tri-colored stripes appeared in various European almanacs into the 19th century, featuring stars with 4, 5, or 6 points and arranged in various patterns. The Serapis flag is distinctive because of the four, irregularly placed blue stripes and 8-pointed stars. Although it was flown as a U.S. Ensign and was recognized as such by a foreign nation, it did not meet the Congressional description of U.S. flags under the Flag Resolution of 1777, which specified "alternate red and white" stripes.