Reconstructing the Past

Reconstructing the Past. City of Alexandria. , Archaeologists excavated four ship hull remnants along the Alexandria Waterfront , one from the Hotel Indigo Site (44AX229) and three from the Robinson Landing Site (44AX235). Over 200 years ago, Alexandrians repurposed these old merchant ships to create new land along the Potomac River., Documentation in situ , Excavation is a destructive process. Once an object is taken out of the ground, it cannot be put back again. The job of an archaeologist is to first document everything in situ so that each object's location, or context, is not lost after excavation. the location of each ship and its relationship to other objects on the site was carefully recorded., Digitally Rebuilding the Ships , Researchers used historic research and archaeological documentation to reconstruct the archaeologically recovered ship remnants., The Conservation Research Laboratory at Texas A&M University and Alexandria Archaeology used handheld laser scanners to create digital models of each timber. These scans were combined in a 3D modeling program to reconstruct a digital model of the ship. Missing sections were extrapolated based on historical research to show what the original vessels would have looked like., Researchers used a 3D printer to make scale models of each ship. Since only portions of the ships were found, wire was added to fill in the remaining structure of each vessel. These physical models show what these ships would have looked like before they were buried as landfill., Each ship timber was laser scanned (above), reconstructed digitally, and 3D printed to create a model (left)., Wood Tells a Story , Most trees create a new layer of growth each year. These growth rings vary in thickness depending on the weather. Patterns of thick and thin rings can show where and when a tree was alive before being cut down to use as lumber. Dendrochronology dates wood by comparing the tree ring sequences of unknown samples, like the ships' wood, to known tree ring sequences., Samples from each ship were taken and compared with the growth rings of trees from around the world. The Hotel Indigo Ship (44AX229, Feature 53) samples show that its timbers came from Massachusetts sometime after 1741. Samples from the three Robinson Landing Site were not conclusive., Digging into Documents , The names of each ship remain a mystery. Researchers studied the size and shape of the recovered vessels and compared them to documents showing similar ships arriving and departing from Alexandria. Local newspapers, customs records, ship registration forms, logbooks, maps, and property records are all useful sources to learn more about historic ships of this time. These documents helped show what cargo the merchant ships may have carried and what places they may have traveled., In the late 18th century, Alexandria was a trading partner with the United Kingdom, Germany, France, Italy, Spain, the Caribbean, and ports along the east coast of North America. While newspaper records do not identify ships trading directly between Alexandria and the African continent, Alexandrians were involved in, and heavily profited from, the trade of enslaved people., What were the ships used for? , The flat floors and full shape of the ship hulls allowed these merchant ships to carry cargo. By the late 18th century, the Potomac River connected the bustling port city to the world., Alexandria mainly exported raw goods like tobacco and wheat, and imported manufactured goods from Europe and sugar from the Caribbean. The forced labor and the trade of enslaved individuals formed the foundation of this trans-Atlantic network.