During the
Roman Empire ships were constructed to transport obelisks from Egypt across the
Mediterranean to Rome and
Constantinople (modern Istanbul).
Pliny the Elder (23–79 CE) and
Ammianus Marcellinus (330–393 CE) give accounts of how obelisks were brought to Rome.
Loading of ships Pliny the Elder described how an obelisk was loaded onto a ship.
Destruction of ships There is little evidence of the great ships that carried the large obelisks across the Mediterranean. One of the two ships that carried the Vatican obelisk was purposely sunk by the emperor
Claudius to build the
Portus harbor; the other burned down during Caligula’s reign (36–41 CE) while on display at the
Puteoli harbor.
Naval architecture Three Roman ships were built to transport one obelisk. The two aft ships were of rectangular shape; they were 37 meters in length and 5 meters in width. The two ships were held together by longitudinal beams, while the obelisk was tied to these longitudinal beams and held stationary underwater. The third ship, a larger
trireme, was in the front and was tied to the two larger ships carrying the obelisk. The third ship’s purpose was to help steer the two aft ships and have rowers and sail power the ship across the Mediterranean. == Modernity ==