You don't just stumble across a piece of history that changed the shape of the world maps. It takes decades of muddy diving, endless archival digging, and a lot of intense scientific arguments.
That's exactly what happened in Newport Harbor, Rhode Island. For another look, consider: this related article.
For 26 years, maritime archaeologists chased a ghost. In June 2025, the Australian National Maritime Museum (ANMM) dropped a definitive final report confirming that a muddy wreck known as site RI 2394 is indeed HM Bark Endeavour. That's the legendary vessel commanded by Captain James Cook during his first voyage to the Pacific between 1768 and 1771.
Finding this ship answers a question that historians have been asking for two and a half centuries. But the real story isn't just that they found it. It's how a global icon of exploration ended up rotting at the bottom of an American harbor, completely forgotten by the people who used it. Similar coverage regarding this has been published by Reuters.
From Pacific Exploration to an Ignominious End
Most people associate the Endeavour with the sunny waters of Tahiti, the charting of New Zealand, and the first European contact with Australia's eastern coast. It's a symbol of the Enlightenment era.
But ships have long lives, and the British Royal Navy didn't treat them like museum pieces. After returning to England in 1771, the vessel was used as a basic naval transport. Then it was sold off to private owners who renamed it the Lord Sandwich.
By the time the American War of Independence broke out, the former pride of the Royal Navy was being used for a much darker purpose: a British troop transport and a floating prison ship.
In 1778, the French fleet sailed in to help American forces take back British-held Newport. The British commanders panicked. To block the harbor entrance and protect their fleet, they deliberately scuttled 13 transport ships north of Goat Island. The Lord Sandwich was one of them. It sank into the silt, its true identity wiped away by time and ocean currents.
How Science Solved a 250-Year-Old Mystery
If you're expecting a dramatic underwater scene where divers brush away sand to reveal a brass plaque reading "Endeavour," forget it. Marine archaeology doesn't work that way.
As ANMM archaeologist Kieran Hosty pointed out, there's no ship's bell sitting down there with "Endeavour" crossed out and "Lord Sandwich" carved over it. Instead, the team had to rely on a "preponderance of evidence" approach. They took what they found on the seafloor of site RI 2394 and compared it directly to the original 1768 Royal Navy Admiralty surveys.
The match was stunningly precise.
The timber dimensions—called scantlings—matched the original plans down to the millimeter, not just the inch. The hull planking thickness measured exactly 3 inches, identical to the 1768 survey specifications for the bottom planks. Even the keel's depth matched perfectly once you accounted for the 3-inch rabbet joint.
Then came the wood analysis. Timber samples taken from the ribs and floor structures proved the ship was built from European white oak, while the keel was hewn from elm. That's an unmistakable signature of a 18th-century British shipyard.
They even found evidence of specific repairs made in Europe in 1776, which lined up with the archival maintenance logs for the Lord Sandwich. Paired and tripled floor timbers on the wreck also mapped out exactly where the Endeavour's main and fore masts used to stand.
The Politics of a Shipwreck
Even with all this data, the discovery wasn't without drama. When the Australian museum first made a preliminary announcement back in 2022, their local partners—the Rhode Island Marine Archaeology Project (RIMAP)—fired back. They called the announcement premature and claimed it was driven by "Australian emotions or politics."
It's easy to see why emotions run high. For Australia, the Endeavour is a foundational artifact. For First Nations peoples across the Pacific, it represents the painful beginning of colonization and land dispossession.
The final report published in mid-2025 finally brought the two organizations closer together. While RIMAP maintained a cautious, scientific skepticism, the sheer volume of overlapping physical data made it impossible to deny that RI 2394 is the best and only viable candidate. No other wreck in the Atlantic database matches these specific dimensions.
What Happens Next to the Wreckage
Only about 15% of the ship actually remains. The rest has been lost to the sea over the last two and a half centuries.
Right now, the clock is ticking. The wooden remains are actively being eaten by shipworms and tiny marine crustaceans called gribbles. Just digging the ship up isn't an option; exposing 250-year-old waterlogged wood to air causes it to collapse and disintegrate rapidly if it isn't treated with specialized chemical stabilizers for years.
Instead, the immediate next steps involve establishing international legislative protections. Because the wreck sits in US waters but carries massive cultural weight for Australia, New Zealand, and Great Britain, creating a collaborative management plan to preserve the site in situ—underwater, where it rests—is the top priority for conservators. For history buffs, the best way to experience the vessel today remains the highly accurate, full-scale replica housed at the Australian National Maritime Museum in Sydney.
Archaeologists confirm wreck site is James Cook's Endeavour explains the rigorous archaeological process and the "preponderance of evidence" approach used to verify the identity of the long-lost ship.
