🛠️ Invention or technique

Reed boat sealed with bitumen

Embarcación de juncos calafateada con betún

Date
c. 5300 BCE · confidence high
Place
H3 As-Sabiyah, Kuwait Bay, Kuwait
Credited to
Ubaid culture in the Persian Gulf
Field
Movement

What it is

Bitumen slabs bearing impressions of reed bundles and barnacles, plus a clay boat model, documenting waterproofed seagoing reed vessels. The first direct evidence of maritime navigation in the Gulf.

The H3 model may show a mast, which would push back the date of the sail; there is no consensus.

What it led to

  • Ubaid maritime trade between Mesopotamia and eastern Arabia (pottery, beads)
  • The Gulf route that later links Sumer with Dilmun, Magan and the Indus
  • Industrial use of bitumen as a waterproofing agent
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