The Navicella (literally "little ship") or Bark of St. Peter,[2] of Old Saint Peter's Basilica in Rome, was a large and famous mosaic by Giotto di Bondone that occupied a large part of the wall above the entrance arcade, facing the main facade of the basilica across the courtyard. It depicted the version from the Gospel of Matthew (Matthew 14:24–32) of Christ walking on the water, the only one of the three gospel accounts where Saint Peter is summoned to join him.[3] It was almost entirely destroyed during the construction of the new Saint Peter's Basilica in the 17th century, but fragments were preserved from the sides of the composition, and what is effectively a new work, incorporating some original fragments, was restored to a position at the centre of the portico of the new building in 1675.[4]
The mosaic, designed to be seen from a distance, was extremely large. A full-scale copy in oil, commissioned by the Vatican from Francesco Berretta in 1628, after much of the work had already been lost round the edges, measures 7.4 by 9.9 metres (24 ft × 32 ft).[5] The full mosaic was probably about 9.4 by 13 metres (31 ft × 43 ft), with an inscription in Latin verse running below the image.[6]