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Centuries-Old Ship Found Beneath the Ruins of the World Trade Center

Photo Credit: Don Emmert / AFP / Getty Images
Photo Credit: Don Emmert / AFP / Getty Images

While overseeing the excavation of one of the most tragic ruins of the 21st century – those of the World Trade Center – a team of researchers came across something unexpected: the wooden hull of a centuries-old ship. Years after the discovery, the team has almost solved the mystery of their find, although there is still one question left unanswered.

Excavating the World Trade Center

Workers standing around the remains of a wooden sloop
Workers inspect the hull of a late 18th-century sloop found at the site of the World Trade Center, July 2010. (Photo Credit: Don Emmert / AFP / Getty Images)

It was in July 2010 that the team made this amazing discovery, buried under 22 feet of soil and debris. The site was just south of where the Twin Towers came down on 9/11. Somehow, when the structures were constructed, the ship went entirely unnoticed.

At the time of the discovery, the workers were tasked with monitoring ongoing construction, to make sure any archaeological finds were properly managed. Molly McDonald, who was working that day, told CNN, “Early one morning, we were monitoring and suddenly saw this curved timber come up. It was clear to me that it was part of a ship, so we stopped the backhoes and started hand digging.”

They obviously wanted answers about their find, so they quickly set to work excavating and researching the hull.

The answers are in the wood

Curators from the Maryland Archaeological Conservation Laboratory cleaning pieces of wood
Curators from the Maryland Archaeological Conservation Laboratory clean timber from the sloop unearthed at the site of the World Trade Center, August 2010. (Photo Credit: Marvin Joseph / The Washington Post / Getty Images)

Four years after the ship was first discovered, the team published their findings, also indicating the term “ship” isn’t technically correct. What was found was actually a sloop, a type of vessel used to carry passengers and cargo across the Hudson River.

They used the technique of dendrochronology – tree ring dating – to determine that the wood mostly came from Philadelphia, meaning that was likely where the sloop was built. They were also able to date the vessel to sometime between the mid or late 18th century, likely around 1773. It only sailed for around 20-30 years.

Impressively, the team noted that the same oak trees used to build the sloop were likely also used to construct the hall in Philadelphia where the Declaration of Independence was signed in 1776.

How did the sloop end up beneath the World Trade Center?

Volunteers from the Maryland Archaeological Conservation Laboratory cleaning pieces of wood
Volunteers from the Maryland Archaeological Conservation Laboratory clean timber from the sloop unearthed at the site of the World Trade Center, August 2010. (Photo Credit: Marvin Joseph / The Washington Post / Getty Images)

The obvious question that remains unanswered is how did the sloop wound up beneath the World Trade Center. No one knows, but that hasn’t stopped the team from throwing out a couple of different possibilities. The leading theory is that the vessel was purposefully sunk to help make the coastline larger. Another suggests it was simply an accidental wreck, nothing more exciting than that.

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The team were also able to see that the vessel had a shipworm infestation, which would have made the sloop’s life shorter than it should have been, helping to back up the idea that she was sunk on purpose. Either way, they were able to determine she’d been submerged for quite some time before being covered by both dirt and garbage. It was this pile, including the unknown sloop, that made up the Manhattan coastline.

Rosemary Giles

Rosemary Giles is a history content writer with Hive Media. She received both her bachelor of arts degree in history, and her master of arts degree in history from Western University. Her research focused on military, environmental, and Canadian history with a specific focus on the Second World War. As a student, she worked in a variety of research positions, including as an archivist. She also worked as a teaching assistant in the History Department.

Since completing her degrees, she has decided to take a step back from academia to focus her career on writing and sharing history in a more accessible way. With a passion for historical learning and historical education, her writing interests include social history, and war history, especially researching obscure facts about the Second World War. In her spare time, Rosemary enjoys spending time with her partner, her cats, and her horse, or sitting down to read a good book.

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