Conquering the Sea: A Story of Ambition, Boulders, and Ashlar Blocks from Amathous, Cyprus

Judith Gatt presents her doctoral research on the south horizontally composite breakwater of the Hellenistic harbour at Amathus, examining how the submerged structure was planned, supplied with stone and assembled in the open sea.

Gatt defines the terms of construction archaeology and sets the context: the collapse of the Cypriot city-kingdoms during the wars of the Diadochi and the rule of Demetrios Poliorketes between 306 and 294 BCE. Built on an exposed southern coast, the harbour has east and west moles and a south breakwater now up to four metres underwater. Gatt reviews the 1980s excavations by Jean-Yves Empereur for the French School at Athens, the 2017 publication with Tony Koželj, and recent photogrammetry and total-station survey.

Consulting modern harbour engineers led Gatt to revise the 1980s reconstruction, which placed the ashlar mole, small quarry-run debris and outer boulders side by side. Stone-size mapping across the 174-metre structure and profiles through the Posidonia seagrass showed seaward collapse rather than collapse into the basin. Gatt proposes a layered profile: a single inner row of about 1,300 header blocks up to 3.5 metres long, backed by superimposed layers of quarry run, medium stones and large outer boulders totalling some 21,000 cubic metres.

Comparing nails from the trenches with 1950s photographs of Limassol harbour, she suggests wooden cofferdams helped lay the ashlar wall straight. Stone sampling points to inland limestone quarries. Seven types of lifting bosses, clustering near the entrance, suggest extra quarry crews recruited to finish the base quickly against Ptolemaic Egypt. Questions cover the six block courses, subsidence, and Paphos and Kition.