The Unbelievable Discovery Of Spain’s Greatest Treasure Galleon

The Unbelievable Discovery Of Spain’s Greatest Treasure Galleon


June 11, 2025 | Jillian Kent

The Unbelievable Discovery Of Spain’s Greatest Treasure Galleon


Sunken Treasure

The weather off the Florida Keys has claimed many boats over the years. In 1622, it claimed a fleet of Spanish ships including the treasure galleon Nuestra Senora de Atocha. Sunk beneath the waves, the vessel was not seen again for over 300 years.

Atocha-Msn

Building The Ship

The Atocha was a large multilevel ship known as a galleon. Made for the Spanish Crown in 1620, she was built in Havana and designed for greatness.

File:Scale model of a Spanish galleon.jpgEyeTrick, Wikimedia Commons

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Building The Ship

The Atocha was a mammoth ship. At 550 tons, her overall length was 112 feet. Her beam came in at 34 feet and her draft at 14 feet. She was an exemplary model of Spanish craftsmanship at the time.

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Building The Ship

The existing records for the Atocha have been lost. However, she’s expected to have been built to typical measurements of a 17th-century Spanish galleon.

File:Galeón Andalucía Quebec City 02.jpgCephas, Wikimedia Commons

Building The Ship

This means that on top of a square-rigged fore, mainmast, and a lateen-rigged mizzenmast, she likely also had a high stern castle, low waist, and high forecastle. The Atocha was a prize to any fleet.

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The Treasure Galleon

The Spanish were famed for their powerful sailing vessels. Among them, the Nuestra Senora de Atocha stood out. Her size and power meant that she served as the Almirante, or rear guard, for any given fleet.

File:Cornelis Verbeeck, A Naval Encounter between Dutch and Spanish Warships, 156252 original.jpgCornelis Verbeeck, Wikimedia Commons

The Treasure Galleon

The rear guard was the position that the Atocha held during her fateful final voyage. Laden with treasure that had been collected from the Spanish ports of Cartagena, Porto Bello, and Havana, Spain was eager for the arrival that would never come.

File:Spanish Galleon Firing its Cannon.jpgCornelis Verbeeck, Wikimedia Commons

Delayed Departure

Tragedy could have been avoided if it weren’t for delays in the Atocha’s departure. Her rendezvous point with the Tierra Firme Fleet was Havana. However, her treasure was so vast that it took two months for it to be recorded and loaded onto the ship.

File:Harbor and Muelle Lus, Havana, Cuba LCCN93514455.jpgMiscellaneous Items in High Demand, PPOC, Library of Congress, Wikimedia Commons

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Delayed Departure

Once in Havana, the Atocha and her fleet saw even further delays. The Atocha along with her 28-ship convoy did not leave for Spain until September 4, 1633—six weeks after its intended departure.

File:Havana Harbor, Cuba - 1898.jpgAnonymousUnknown author, Wikimedia Commons

The Convoy

The goal of the convoy was to transport South American treasures back to Spain. Each ship was heavy with crew, soldiers, passengers, provisions, and treasures.

An an emerald-encrusted crucifix (C) is pictured along with other Spanish treasures at the Guernsey's in New York on July 6, 2015. An exquisite gold chalice, an emerald-encrusted crucifix and a gold bar go on auction in New York next month, recovered from a Spanish ship that sank off the coast of Florida in 1622. The extraordinary items were discovered by a US treasure hunter from the wreckage of the Nuestra Senora de Atocha, the most famous vessel in a Spanish flotilla that sank after sailing into a hurricane. The ship, laden with New World riches, was one of at least eight that sank in the storm en route back to Spain. She went down with 265 people on board, of whom only five survivedJEWEL SAMAD, Getty Images

The Convoy

On the Atocha alone, there was anywhere from $250—$500 million worth of treasures. This included silver, gold, emeralds, and pearls all collected from various South American locations.

An employee shows a Spanish gold chalice at the Guernsey's in New York on July 6, 2015. An exquisite gold chalice, an emerald-encrusted crucifix and a gold bar go on auction in New York next month, recovered from a Spanish ship that sank off the coast of Florida in 1622. The extraordinary items were discovered by a US treasure hunter from the wreckage of the Nuestra Senora de Atocha, the most famous vessel in a Spanish flotilla that sank after sailing into a hurricane. The ship, laden with New World riches, was one of at least eight that sank in the storm en route back to Spain. She went down with 265 people on board, of whom only five survivedJEWEL SAMAD, Getty Images

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The Convoy

Among the treasures were also more common goods that were just as necessary to the Spanish people. These included tobacco, bronze cannons, and worked silverware. Neither the jewels nor the goods ever made it to Spain.

File:Sevilla Nuestra Señora de Atocha Archivo General de Indias 21-03-2011 11-24-15.jpgPaul Hermans, Wikimedia Commons

Into The Storm

Anyone living there today can tell you that the waters in the Florida Keys are a dangerous place to be during September. After all, this is the peak of hurricane season and that’s exactly the trouble the Atocha found.

File:Gfp-florida-keys-key-west-blue-green-water.jpgYinan Chen, Wikimedia Commons

Into The Storm

The fleet was only two days out from Havana when they became trapped in a hurricane in the Florida Straits. By the morning of September 6, eight of the 28-ship convoy’s ships laid strewn across the ocean from Marquesas Key to Dry Tortugas.

File:Dry Tortugas (3484242358).jpgDominic Sherony, Wikimedia Commons

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Into The Storm

The Nuestra Senora de Atocha had 265 people aboard her between crew and passengers. By the time the storm was done, only three sailors and two slaves remained. They survived by clinging to the mizzenmast.

fiquetdidier1fiquetdidier1, Pixabay

Into The Storm

Among those lost was Bartolome Garcia de Nodal. Nodal was a known Spanish explorer who’d navigated the Straits of Magellan surrounding Cape Horn about five years earlier. These losses don’t factor in the loss of treasure.

File:Courbes-Relacion del viaje.jpgJuan de Courbes-Biblioteca Nacional de Espana, Wikimedia Commons

Into The Storm

None of the treasure from the Atocha was salvageable. It all sunk to the bottom of the ocean. The Atocha sunk about 140 km from Havana; it had barely left the port before disaster struck.

File:La Habana Nasa.jpgU.S. Government, NASA - Upload User:Shaka, Wikimedia Commons

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Salvaging The Wreckage

The surviving ships could not mourn this tragedy. They had their treasures and people to return home. They also needed to report the loss to Spain. Perhaps something could be salvaged.

A gold spoon from a Spanish treasure from the 17th century is on display at Guernsey's on August 5, 2015 in New York. On July 20, 1985, American treasure hunter Mel Fisher discovered the treasure of the Nuestra Señora de Atocha, the most famous member of a fleet of Spanish ships that sank in 1622 after sailing into a hurricane. On August 5, Guernseys will auction selected items from Fishers Collection. A portion of the proceeds will benefit the Michael Abt, Jr. Have a Heart Foundation, which works to provide Automatic External Defibrillators (AED) to schools nationwide.DON EMMERT, Getty Imgeas

Salvaging The Wreckage

Instead of carrying on to Spain, the surviving boats sent news of the sinking back to Havana where Spanish authorities quickly organized a salvage mission for the lost treasure. It was so close to home; surely, they could retrieve it.

Port of HavanaJose Gomez de la Carrera, CC BY 4.0, Wikimedia Commons

Salvaging The Wreckage

They sent five ships to attempt to salvage the wreckage of both the Atocha and its fellow ship, Santa Margarita. The ship sunk in 56 ft of water making it tricky for divers of that period to salvage the cargo or guns from the ship.

File:Bungsberg (ship) 000012.jpgPeeprada at English Wikipedia, Wikimedia Commons

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Salvaging The Wreckage

To make matters worse, Mother Nature wasn’t done with the area. A few weeks later, on October 5, another hurricane swept through. This pushed the wreckage about, scattering what remained further apart.

ocean waves near city buildings during daytimeCraig Cameron, Unsplash

Years Of Effort

Despite the difficulties, the Spanish did not give up their efforts. Afterall, with the help of enslaved people there was little risk of loss to them specifically. The treasure was more valuable than these specific lives.

File:Francisco de Zurbarán 014.jpgFrancisco de Zurbarán, Wikimedia Commons

Years Of Effort

The method of retrieval was quite rudimentary and very risky. Using a large brass diving bell with one glass window, someone (always an enslaved person) would be sent to the bottom of the ocean. That was only half the job.

A diver with a standard diving dress sits outside an anchored sailing boatUnknown Author, Wikimedia Commons

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Years Of Effort

Once they were at the bottom of the ocean, the person would then have to retrieve the item and then return to the surface to be hauled up by men on deck. The process was extremely dangerous.

San Francisco Maru Type 95 HA-Go Tankmontereydiver, CC BY 2.0, Wikimedia Commons

Years Of Effort

It was a lethal job to be sent down to the bottom of the ocean with only rudimentary science at your side. So many people perished during this process that the lost enslaved people were recorded as business expenses for captains of salvage ships.

ShipwreckOkinawa Diving School World Diving, Pexels

Years Of Effort

They continued this salvage mission for the Atocha and the Santa Margarita for several years. They managed to recover half of the Santa Margarita’s treasure. However, the Atocha remained out of their reach.

Treasure of Santa MargaritaHeart shaped ring found on the Santa Margarita Site, Mel Fishers Treasures

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Treasure Lost

It is no wonder they spent so much time searching and salvaging from these ships. Spanish commercial interests had been banking on that treasure and the loss of it was a huge blow to their coffers.

Uluburun shipwreckExplorer Classroom | Underwater Archaeology with Lisa Briggs, National Geographic Education

Treasure Lost

In order to cover the costs of the loss, which had been intended to help with their ongoing involvement in the Thirty Years’ War, Spain had to borrow money. They also sold several galleons to make up for the missing cost.

File:Pirates, Roman Polanski, boat Genova 2.jpgZil, Wikimedia Commons

Treasure Lost

They spent a decade salvaging the Santa Margarita; they continued looking for the Atocha for 60 years, yet they never found her. It took 300 years before anyone saw the Atocha again.

joakantjoakant, Pixabay

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The Modern Search

The search for the Nuestra Senora de Atocha started again in 1969. This time, it was taken up by a group of American treasure hunters, Mel Fisher, Finley Ricard, and a team of subcontractors.

 Mel FisherKeysDiveGuideVol.25(GalleonHunter7)Mel Fisher - King of the SaTreasure lvors, KeysDiveGuide - Don Ferguson Productions

The Modern Search

Fisher and Ricard got their funding from a variety of investors. It became a joint venture under the organizational title of Treasure Salvors Inc. With their money and funds, they began searching the seabed for evidence of the Atocha.

Nuestra Senora De AtochaThe Great 17 Year Hunt For The Lady Of Atocha's $400m Treasure, Real History

The Modern Search

They found early success. In 1970, Fisher recovered portions of the Santa Margarita. However, that was a small victory as even the Spanish in the 1600s had managed to recover much of the Santa Margarita.

Nuestra Senora De AtochaWhy are Atocha Emeralds so valuable?, Mel Fishers Treasures

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The Modern Search

Fisher and Ricard struggled to gain help. Although they reached out to potential divers, many turned the offer down due to the fact that the job, which was very dangerous, would pay minimum wage unless they found the ship.

Nuestra Senora De Atocha KeysDiveGuideVol.27(GalleonHunter9)Ghost Ships-1733 Fleet, KeysDiveGuide - Don Ferguson Productions

The Discovery

In 1973, they discovered silver bars that were supposedly from the Atocha. Two years later, Fisher’s son found five bronze cannons with markings that proved them to be from the Atocha. They were on the right track.

File:Cañón del galeón Nuestra Señora de Atocha.jpgCarlosVdeHabsburgo, Wikimedia Commons

The Discovery

As a result of the discovery of the cannons, a large part of the silver, gold, and emeralds were discovered. Fisher’s other son radioed the good news to Treasure Salvors from their salvage boat.

Nuestra Senora De Atocha Why are Atocha Emeralds so valuable?, Mel Fishers Treasures

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The Discovery

The coins that they salvaged were minted, primarily, between 1598—1621. However, among them were many rare coins as well. Some coins were unknown until they were pulled out of the wreckage.

Nuestra Senora De Atocha KeysDiveGuideVol.25(GalleonHunter7)Mel Fisher - King of the Treasure Salvors, KeysDiveGuide - Don Ferguson Productions

The Missing Piece

Although Fisher and Ricard succeeded in finding the bulk of the treasure, a large chunk of the wreckage is still missing. This includes the most important part of the ship: the sterncastle.

Nuestra Senora De Atocha The Great 17 Year Hunt For The Lady Of Atocha's $400m Treasure, Real History

The Missing Piece

Most experts believe that the sterncastle (the rear of the ship) would have been where the original sailors put most of the gold, as well as the rare Muzo emeralds that were cataloged among the treasure.

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The Missing Piece

This is believed to be the case because they would have been stored in the captain’s cabin for safekeeping. The captain’s cabin would have been in this rear portion of the ship that is still missing.

Nuestra Senora De Atocha KeysDiveGuideVol.25(GalleonHunter7)Mel Fisher - King of the Treasure Salvors, KeysDiveGuide - Don Ferguson Productions

Fighting For The Treasure

Although Treasure Salvors made the discovery, the state of Florida felt that they deserved part of the cut. They forced Treasure Salvors into a contract that gave 25% of the found treasure to the state.

File:Orlando Florida April 2010 14.JPGILA-boy, Wikimedia Commons

Fighting For The Treasure

Treasure Salvors did not take this sitting down. They fought the state, feeling that the find should belong to those who discovered the treasure alone. After all, what did the state do for their search?

Nuestra Senora De AtochaKeysDiveGuideVol.27(GalleonHunter9)Ghost Ships-1733 Fleet, KeysDiveGuide - Don Ferguson Productions

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Fighting For The Treasure

The fight was a long one. They spent eight years in litigation and the case ultimately ended up in the US Supreme Court. However, Treasure Salvator would win out in the end.

File:Supreme Court of the United States - Philosophical Swag.jpgPhilosophicalswag, Wikimedia Commons

Fighting For The Treasure

On July 1, 1992, the Supreme Court ruled in Treasure Salvator’s favor. The right to all treasure was award to them. Unfortunately, Fisher only had a few years to enjoy his win as he passed six years later.

Nuestra Senora De Atocha KeysDiveGuideVol.25(GalleonHunter7)Mel Fisher - King of the Treasure Salvors, KeysDiveGuide - Don Ferguson Productions

The Continued Search

The hunt for the rest of the Atocha continued. In June 2011, they found further success: they discovered an antique emerald ring.

Nuestra Senora De Atocha Why are Atocha Emeralds so valuable?, Mel Fishers Treasures

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The Continued Search

The ring was found 35 miles from the coast of Key West. Although discovered along with some other artifacts, the ring was the biggest boon. It is estimated to be worth $500,000.

File:Key West Coast Guard Station (8364658654).jpgState Library and Archives of Florida, Wikimedia Commons

A Record Find

Thanks to its 40 tons of gold and silver as well as 32 kilos of emeralds, the Nuestra Senora de Atocha was named the most valuable shipwreck to be discovered by the Guinness Book of World Records in 2014.

Nuestra Senora De Atocha Why are Atocha Emeralds so valuable?, Mel Fishers Treasures

A Record Find

Unfortunately, that was not a title that the Atocha held for long. Only a year later, in 2015, it was surpassed by the discovery of the San Jose.

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The Priceless Treasures Of The Palmwood Shipwreck

The Discovery Of The Antikythera Wreck

The Worst Shipwreck In History Wasn't The Titanic

File:Wager's Action off Cartagena, 28 May 1708.jpgSamuel Scott, Wikimedia Commons

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