https://www.smithsonianmag.com/smart-news/brittle-coating-on-2200-year-old-roman-shipwreck-revealing-how-ancient-soliders-kept-ships-afloat-180989394/
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“The Secret Ingredient Might Be Blood August 25, 2026 Sonja Anderson is a daily correspondent for Smithsonian magazine who covers art, archaeology and culture, from newly discovered artifacts to the latest art heists.”
“As Charrié-Duhaut told Chemistry World ’s Mason Wakley in April, “There’s a long history of coating” in shipbuilding.”
“Discovered in 2016 and named Ilovik–Paržine 1 , the ship offers a detailed glimpse into ancient shipbuilding techniques.”
““While it seems obvious that ships sailing long distances need repairs, it’s simply not easy to demonstrate this,” Charrié concludes.”
“Damelet, CNRS/CCJ More than two millennia ago, a Roman Republic ship carrying timber and wine sank in the Adriatic Sea, off the coast of what is now Croatia.”
“The findings highlight an often overlooked aspect of ancient seafaring: the organic materials used to keep wooden vessels watertight.”
“Sticky pitch can trap airborne pollen—tiny grains released by plants during reproduction.”
“Adding beeswax to tar would have made the coating more flexible and easier to apply.”
“Previous analysis of the ship’s ballast found a strong geological match with the Brindisi region, and suggested that the ballast was loaded there when the ship was built.”
“Share Copy link Email SMS Facebook X Reddit LinkedIn Bluesky Print Add as preferred source The Ilovik-Paržine 1 shipwreck, with logs and amphorae visible in the foreground Adriboats © L.”
“A Brittle Coating on a 2,200-Year-Old Roman Shipwreck Reveals How Ancient Sailors Kept Their Ships Afloat Skip to main content Search Shop Newsletters Renew Give a Gift Subscribe Membership i Subscribe Give a Gift Renew Sections Smart News History Science Innovation Arts & Culture Travel At the Smithsonian More from Smithsonian magazine Newsletters Photo Contest Podcast Videos Our Partners Smithsonian Store Smithsonian Journeys Subscribe to Smithsonian magazine and get a FREE tote.”
“Remarkably, the wreck offers clear evidence of an elaborate effort to waterproof its wooden hull, shielding the vessel from the corrosive effects of seawater.”
“One sample, however, contained a mixture of tar and beeswax, a formulation associated with ancient Greek shipbuilding and referred to in ancient sources as zopissa .”
“These plants are characteristic of Mediterranean and Adriatic coasts and valleys and are consistent with the ship’s proposed construction area near Brindisi , on Italy’s southeastern coast.”
“Statistical analysis identified four to five distinct coating batches, which may reflect successive repairs or separate applications during construction or refitting.”