
Public Domain via Wikimedia Commons
According to the Greek philosopher Plato, Atlantis was sunk as retribution by the gods. Today most historians and archaeologists consider Atlantis a myth (but likely based on the actual demise of the island of Thera and resultant decline of the Minoans), but the sinking of Port Royal into the Caribbean Sea is true.
Port Royal was founded in 1494 in southeast Jamaica on the peninsula of what was later called Kingston Harbor. The Spanish did not think it important at the time, but the island was strategic due its location to a major trade route. Sugar cane was the important crop and the island remained under Spanish control until the British seized the island in 1655. The British would build extensively in Port Royal (originally called Cagway) adding houses, shops, warehouses, and two forts. It became the unofficial capitol of Jamaica (Spanish Town was the capital until Kingston). Port Royal, due to its location on the Spanish Main, would become the home of privateers. Back then since most navies were small, governments would commission ship captains to wage war on their enemies at sea. Privateers, armed with the Letters of Marque that authorized them to act for the crown, allowed them to attack a country’s enemies on the seas. Privateers could seize ships and their cargoes to be sold for profit. The difference between a pirate and a privateer was simple. A pirate operated without a Letter of Marque and was a menace to all subject to death when caught.
Port Royal became a wealthy city due to the privateering and one of the largest cities in the Caribbean with over 6,500 people at its height. Its reputation as both gaudy for its display of wealth, and for its loose morals, made it one of the most notorious cities in the world at the time. Privateers would spend money in taverns (there was one for every ten people), gambling, and prostitution. Merchants of all kinds also dipped into the privateer purse by selling all kinds of products to them. The city ran out of room, so they built a landfill. While there was some advice to use wood, many choose instead to build with brick not realizing they were building on sand and not bedrock. By 1692 the need for privateers had ebbed. When the British signed the Treaty of Madrid in 1670, it ended their need to raid Spanish ships and cities. The famous privateer of the era, Henry Morgan, ended up serving in the Jamaican government and even being governor at times. Privateers could still use Port Royal, but they had to be careful to never attack British ships if they had a Letter of Marque from another power. The French still issued them in their war against Spain, though tensions between Britain and France were often difficult as well.
Pirates also had emerged as a new threat as they attacked everyone. Anti-piracy laws were soon enacted, and Port Royal was no haven for them. They would be shot at if they approached, their ships seized, and its captain and crew faced death or imprisonment. Port Royal, which had grown wealthy off the privateers, now wanted to end its bad reputation as a city for extreme drunkenness, debauchery, and illicit wealth. But on 7 June 1692, a series of three earthquakes hit starting at 11:43 a.m. All of Jamaica was shaken violently but the worst was at Port Royal. Buildings on the landfill or over water collapsed and sank. Then the tsunami arrived, putting half of the city under water. Spanish Town was completely destroyed and landslides inland claimed lives.
An estimated 3,000 people died from the earthquakes, tsunami, and landslides. Many died later from looters, injuries, and diseases. Small parts of the city did survive and attempts to rebuild were unsuccessful. As news spread that the wicked city was gone, many cheered its demise. Kingston became the new center of commerce and trade from that point on. Today it is known as the city that sank and a world heritage site. Tourists now visit the site and scientists of all kinds still study what happened. Liquefaction is one of the culprits of its demise, something that now explains how some cities built were destroyed in ancient times such as Helike in Greece or Thonis-Heracleion in Egypt.

Public Domain via Wikimedia Commons
Sources
- Black, Annetta. “Sunken Pirate City at Port Royal.” Atlas Obscura. Last modified July 21, 2016. Accessed June 8, 2026. https://www.atlasobscura.com/places/sunken-pirate-stronghold-at-port-royal.
- “Port Royal.” Encyclopedia Britannica. Accessed June 8, 2026. https://www.britannica.com/place/Port-Royal-Jamaica.
- “Privateers in the American Revolution (U.S. National Park Service).” Accessed June 8, 2026. https://www.nps.gov/articles/privateers-in-the-american-revolution.htm.
- “Earthquake Destroys Jamaican Town.” HISTORY. Last modified January 31, 2025. Accessed June 8, 2026. https://www.history.com/this-day-in-history/june-7/earthquake-destroys-jamaican-pirate-haven.
- Vallar, Cindy. “Pirates & Privateers: The History of Maritime Piracy – Pirate Havens Port Royal.” Accessed June 8, 2026. http://www.cindyvallar.com/havens4.html.
Documentaries & Films
- The History Guy: History Deserves to Be Remembered. “Pirates and the Earthquake That Destroyed Port Royal.” Video. YouTube, June 7, 2017. https://www.youtube.com/watch?v=EypOHCv2JsY.
- National Geographic Wild. “Best Documentary History of Port Royal Underwater Cities.” YouTube, 22 Jan. 2017, www.youtube.com/watch?v=B1VLUevIWIs.







