Tessarakonteres

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Callixenus of Rhodes, writing in the 3rd century BCE, describes a tessarakonteres built for Ptolemy IV of Egypt as follows:

  • Length 425 feet
  • Beam 58 feet
  • Height from tip of sternpost to waterline 80 feet
  • Length of steering oars 45 feet 6 inches
  • Longest rowing oars used 57 feet 8 inches
  • Displacement 1000 tons
  • Oarsmen 4000
  • Other ratings 400
  • Marines 2850

Guinness World Records recognizes it as the world's Largest Human Powered Vessel.


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