Roman Shipwreck’s 2,200‑Year‑Old Hull Reveals Ancient Waterproofing Techniques and Geographic Clues

Scientists studying a 2,200‑year‑old Roman shipwreck discovered that its hull was coated with pine tar, and in one section a mixture of tar and beeswax. Microscopic analysis of pollen trapped within these coatings showed that the pollen grains matched plants from specific regions, effectively acting as a geographic fingerprint. The pollen record indicates the landscapes surrounding the ship at the time repairs were carried out, offering new insight into Roman maritime maintenance practices and the environmental context of ancient shipbuilding. The find demonstrates how organic residues on historic vessels can preserve both technological details and ecological information from antiquity.